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is a significant concern for physicians. Central
: f( @# }( }# Z0 F" j& Dprecocious puberty (CPP), which is mediated
0 o% Z/ d0 L4 @through the hypothalamic pituitary gonadal axis, has
3 s3 j- w3 F) x5 A9 V4 _a higher incidence of organic central nervous system
+ m7 R. u4 r. {! S' i6 q5 X. _/ mlesions in boys.1,2 Virilization in boys, as manifested
: L# L4 u% `2 H5 dby enlargement of the penis, development of pubic
2 {/ C: n( J% c! m( g$ phair, and facial acne without enlargement of testi-
6 m$ D s4 K- gcles, suggests peripheral or pseudopuberty.1-3 We
- M2 [3 p$ h5 N) Qreport a 16-month-old boy who presented with the
. E$ g3 j" i# cenlargement of the phallus and pubic hair develop-
) {! D4 s7 U: o2 l$ I: Rment without testicular enlargement, which was due
3 F8 i* c5 E" E* f/ V/ Yto the unintentional exposure to androgen gel used by
2 x A4 u e+ @the father. The family initially concealed this infor-$ C* D' b; C% ^7 G
mation, resulting in an extensive work-up for this6 K( e0 f- m9 ~$ r
child. Given the widespread and easy availability of! u5 b* S) E$ _8 ^6 W. z+ {: t
testosterone gel and cream, we believe this is proba- Y% y" |9 j1 D) z" g
bly more common than the rare case report in the
7 o4 O2 g4 D) ?, Xliterature.4, E: ~& d6 |6 @
Patient Report
" g6 i+ t& K# R4 K) NA 16-month-old white child was referred to the
: Q1 @! Z8 B8 b( g; eendocrine clinic by his pediatrician with the concern
Q! Q6 I$ d' n* x6 Aof early sexual development. His mother noticed- ^ `) q% O e
light colored pubic hair development when he was
' `8 y' Z, {; bFrom the 1Division of Pediatric Endocrinology, 2University of
_- Z! O4 m! g, H6 N, z7 G2 hSouth Alabama Medical Center, Mobile, Alabama.
L2 g z9 a H( i b1 ^0 vAddress correspondence to: Samar K. Bhowmick, MD, FACE,' j6 E& m$ m$ | M; n
Professor of Pediatrics, University of South Alabama, College of4 H5 t8 m9 T2 `4 V1 p
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;8 n( J K0 K# l0 c% Y0 N
e-mail: [email protected].8 n: X7 e: I6 r6 w3 A
about 6 to 7 months old, which progressively became
4 D( G3 X' n: i, `, w4 T% |darker. She was also concerned about the enlarge-
) n7 ~# P- p0 [& {ment of his penis and frequent erections. The child
4 C; b( K7 O6 ^$ l. i3 h9 i3 zwas the product of a full-term normal delivery, with6 h7 s/ s _, o4 _# D0 P5 @
a birth weight of 7 lb 14 oz, and birth length of( q" X4 d5 y9 }3 t
20 inches. He was breast-fed throughout the first year
; K$ E# F* D4 u2 yof life and was still receiving breast milk along with
$ y1 z- b& v& N# p; g/ S3 Qsolid food. He had no hospitalizations or surgery,2 N9 \1 p- I/ p9 Y0 O8 ?
and his psychosocial and psychomotor development
6 A8 h& A' P& h; n8 J' h5 B9 Bwas age appropriate.& A: q1 h% k/ U9 L
The family history was remarkable for the father,
, u% B; f. v; k# o- Lwho was diagnosed with hypothyroidism at age 16,- s0 r+ Q- U6 g6 L3 {% q' n
which was treated with thyroxine. The father’s+ L N3 i& H; B1 u
height was 6 feet, and he went through a somewhat$ t5 @. f) p7 C( m- j
early puberty and had stopped growing by age 14.$ J3 }( o% K8 o2 T) T0 h+ q
The father denied taking any other medication. The
4 a5 @& I9 L# O& d: Jchild’s mother was in good health. Her menarche
: ?9 r4 i$ K$ E8 J. K4 jwas at 11 years of age, and her height was at 5 feet: Z: B- R# u9 i1 Q1 M
5 inches. There was no other family history of pre-
0 s7 @$ i2 Q' zcocious sexual development in the first-degree rela-- ]8 O _/ F! H f0 D0 g+ w. @
tives. There were no siblings.- K+ R% A- Q& e
Physical Examination* M& v" E0 Y% @3 b
The physical examination revealed a very active,+ P# U6 V$ t" L. @5 w$ ~" }4 l
playful, and healthy boy. The vital signs documented2 C% {; T u3 D9 i% x7 j
a blood pressure of 85/50 mm Hg, his length was
; a& ]' E: ]' a2 w9 F L% T90 cm (>97th percentile), and his weight was 14.4 kg
2 B- ]6 m% k$ Y: x(also >97th percentile). The observed yearly growth
( P" j, j' O; I" K; i: Kvelocity was 30 cm (12 inches). The examination of0 _$ q6 X+ Q$ w% v V
the neck revealed no thyroid enlargement.
) d3 i* a4 h- f# P3 O1 x r7 aThe genitourinary examination was remarkable for
3 Z: U2 s0 R* |0 Q' Ienlargement of the penis, with a stretched length of" Q. F( o9 r1 M% v
8 cm and a width of 2 cm. The glans penis was very well$ \( h) w+ F0 S* @4 k( e9 X6 `* @
developed. The pubic hair was Tanner II, mostly around
2 [' h% I1 q% _, [" }5 i5400 C) V" O4 w+ A
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from* H. ]& n$ {* \0 E1 g
the base of the phallus and was dark and curled. The
1 b q1 t' [: G: {* _testicular volume was prepubertal at 2 mL each.
! \% p/ Y6 J# L* `4 h) ?! cThe skin was moist and smooth and somewhat
$ u3 A \* s/ r) V9 [2 yoily. No axillary hair was noted. There were no
% f( C2 ^: p+ L( R# }0 k0 uabnormal skin pigmentations or café-au-lait spots.) ]1 C; x" p% O4 b0 ^4 j+ _0 l& J
Neurologic evaluation showed deep tendon reflex 2+
4 c3 O6 P" `* I9 [6 _bilateral and symmetrical. There was no suggestion ~( d/ ]- ]6 C9 X
of papilledema.
. l: e& Q$ ~/ U" ~& A0 \1 t* xLaboratory Evaluation
" v8 ~) E/ z1 ~4 `7 g3 lThe bone age was consistent with 28 months by
- y6 G3 I7 x0 q# p rusing the standard of Greulich and Pyle at a chrono-
) B! U$ B+ J2 J! C' {# y( Clogic age of 16 months (advanced).5 Chromosomal
) @+ u0 V" S0 xkaryotype was 46XY. The thyroid function test
0 ]9 N$ v2 I, A* sshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
$ K* A* c5 G% t" i, N- rlating hormone level was 1.3 µIU/mL (both normal).8 x, l% [7 {. Y. Q
The concentrations of serum electrolytes, blood
7 k9 ?% ^" j+ |5 zurea nitrogen, creatinine, and calcium all were
$ w4 ?- I2 k3 o$ _( S* ]within normal range for his age. The concentration8 O2 M- ?! j3 E. e* y7 j; O4 w5 I9 M
of serum 17-hydroxyprogesterone was 16 ng/dL
' e" e! l B1 T G+ A. B0 g$ m(normal, 3 to 90 ng/dL), androstenedione was 20
" C- t7 Q, L8 U3 r, B% sng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-- F9 }# a3 o+ n' d
terone was 38 ng/dL (normal, 50 to 760 ng/dL),; v6 s& B2 H5 G5 v G4 s
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
V! K& s7 L: a0 Y7 S49ng/dL), 11-desoxycortisol (specific compound S)
- O7 G p& ~* H3 Vwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-# U+ X# \, |! m. r
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total8 A% Y0 P7 w+ t6 x; K l$ e$ r
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
# [. E, |0 t% Q' s* A% hand β-human chorionic gonadotropin was less than
/ h: R& E1 c& v- \5 mIU/mL (normal <5 mIU/mL). Serum follicular
9 P! J$ C& C4 [8 Xstimulating hormone and leuteinizing hormone
/ a4 w( [8 b+ ~3 n. E* M8 U* l3 Oconcentrations were less than 0.05 mIU/mL! Y) a' z& ^# R! f4 {# m& L5 A2 F9 M
(prepubertal).
2 |& f x" c' `3 X2 w wThe parents were notified about the laboratory
& j: a X" L2 }& Yresults and were informed that all of the tests were
; ~" M. n7 L( _3 Unormal except the testosterone level was high. The
' i" Z3 \1 O; t ^: u+ a+ u) `follow-up visit was arranged within a few weeks to% A! _+ H7 H& k
obtain testicular and abdominal sonograms; how-# X; M9 g- r i+ W; G; g. J
ever, the family did not return for 4 months.2 G1 Z8 l1 {; I$ A- A; t. c. E
Physical examination at this time revealed that the; ^% Z- S; Y! B$ w; J; m0 b( k
child had grown 2.5 cm in 4 months and had gained* R: m, K* ?9 R3 [3 p+ ^
2 kg of weight. Physical examination remained
7 e2 H% G9 ?7 }/ I+ Junchanged. Surprisingly, the pubic hair almost com-1 V$ p# _- t- U9 u' B
pletely disappeared except for a few vellous hairs at3 c# E- z. \1 r* Q
the base of the phallus. Testicular volume was still 2- Q, r4 J4 [5 [! y- ?" }2 C
mL, and the size of the penis remained unchanged.5 }2 ~/ A5 e% ^5 L, k$ i
The mother also said that the boy was no longer hav-) T0 s* h6 y L. I1 b( |
ing frequent erections.# L0 W9 f/ M) j' p) {
Both parents were again questioned about use of! j5 V0 h( ?( Q4 H. J" h1 o
any ointment/creams that they may have applied to
& {6 q: ^1 w8 {2 n ]the child’s skin. This time the father admitted the( f5 y" M" v% G7 S
Topical Testosterone Exposure / Bhowmick et al 541
6 m u4 _* f' N* ~: }; d: Z. xuse of testosterone gel twice daily that he was apply-
" k6 u7 P- ^3 y/ Y; A) a$ X5 ring over his own shoulders, chest, and back area for K: z" ~/ z+ [4 @. F& B/ m# g1 Z
a year. The father also revealed he was embarrassed
$ \0 p3 k2 s4 h. jto disclose that he was using a testosterone gel pre-2 `9 i9 f- \$ G2 P9 S* P. O4 A
scribed by his family physician for decreased libido
1 q% j# Y7 a6 Gsecondary to depression.
* l( q. u) h0 s2 H9 B8 o ^2 `The child slept in the same bed with parents.( ^ h6 E% _& m9 ? t+ y, K
The father would hug the baby and hold him on his
. F" m7 u9 Q% D0 ^9 s, g: r/ J2 Jchest for a considerable period of time, causing sig-8 e1 ~* h6 t _0 c( R* ]
nificant bare skin contact between baby and father.
0 W4 U: ?% M" ^The father also admitted that after the phone call,
# ~# J% k: Y: H. R) [when he learned the testosterone level in the baby! i; a( ?3 S+ z7 G# s
was high, he then read the product information
* i0 W' {, O- o+ ~1 S' e! qpacket and concluded that it was most likely the rea-
+ W" |' Z$ s: O- G7 c0 f9 mson for the child’s virilization. At that time, they9 l2 k3 [ u: _6 i/ U
decided to put the baby in a separate bed, and the; C6 O, Y' Q4 B1 I( ^- T
father was not hugging him with bare skin and had
0 J* v: J# @5 \9 R) G) ebeen using protective clothing. A repeat testosterone
- Y$ W' c( |+ C7 A1 p. htest was ordered, but the family did not go to the
# T, P: u$ x" a. r( I- flaboratory to obtain the test.
Y. y3 _ F2 ADiscussion
9 {% ?6 a: J0 i6 |1 @8 N2 q0 YPrecocious puberty in boys is defined as secondary
2 f: C! I8 W1 @5 T7 [1 k6 m: Ssexual development before 9 years of age.1,4
9 k" f# { p& b9 K9 o+ LPrecocious puberty is termed as central (true) when& Z' K+ V' P2 T" O" O& x
it is caused by the premature activation of hypo-
) y/ l8 E2 V+ M% o @thalamic pituitary gonadal axis. CPP is more com-
: ^% O+ b- E# d2 H! V; ^7 Pmon in girls than in boys.1,3 Most boys with CPP
, j# j4 |% W6 Amay have a central nervous system lesion that is9 d1 A$ [5 ^9 i; \
responsible for the early activation of the hypothal-3 }5 R# M: A% O! v2 X5 I4 @# ^
amic pituitary gonadal axis.1-3 Thus, greater empha-: T7 D" A- r) h; F+ A
sis has been given to neuroradiologic imaging in
m7 i9 u) B- m( Q; I# Rboys with precocious puberty. In addition to viril-
- ?1 j, f, O& G2 Oization, the clinical hallmark of CPP is the symmet-
' j6 g* B- M0 R2 H, O7 V# D4 grical testicular growth secondary to stimulation by$ @- {5 ]- ]1 v: X5 @* E& q
gonadotropins.1,3' [7 l; a) w2 J4 i8 `1 | }. [! x
Gonadotropin-independent peripheral preco-
! m% ]0 q1 F% Xcious puberty in boys also results from inappropriate1 J: r# c% w" I1 n, U$ T9 _' m
androgenic stimulation from either endogenous or
3 u8 H: Q* b2 ?exogenous sources, nonpituitary gonadotropin stim-
) ^, h) ^) e+ `& w- u- k2 Iulation, and rare activating mutations.3 Virilizing
8 Q2 T0 B" k; o7 t7 m, @congenital adrenal hyperplasia producing excessive
7 D1 P, Z+ s# r }7 badrenal androgens is a common cause of precocious
- P2 X1 h0 u5 C0 g# Tpuberty in boys.3,42 P; k4 C6 D6 s& ]9 M" Z' P( ~
The most common form of congenital adrenal% r2 x3 Q* i' L) C& N |
hyperplasia is the 21-hydroxylase enzyme deficiency.* J( c0 H9 F/ u% N. W5 e
The 11-β hydroxylase deficiency may also result in s, u9 Y! V& v: p
excessive adrenal androgen production, and rarely,5 q0 A: @- N! v! n
an adrenal tumor may also cause adrenal androgen4 A/ r2 X. [2 [- E5 b; q
excess.1,3
& g3 t) b/ l; t% bat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from! K o" A: z. x+ Z6 e5 R
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007/ f( ]) p% H T1 B
A unique entity of male-limited gonadotropin-" d' C. T+ b2 u0 M4 O! F9 o- U+ P- G
independent precocious puberty, which is also known
* k' W; Q* Q& K' J. [as testotoxicosis, may cause precocious puberty at a5 k9 |; P$ W; X e5 W
very young age. The physical findings in these boys {5 h( ?0 z' R/ n; \+ _
with this disorder are full pubertal development,3 K' c: ]/ o- z6 b- O O! H
including bilateral testicular growth, similar to boys3 \0 e7 t* \- f `8 |! ~$ u
with CPP. The gonadotropin levels in this disorder7 H" ]0 c1 m0 e4 K7 M i
are suppressed to prepubertal levels and do not show0 _ h) D$ m7 p' C R {0 k8 d
pubertal response of gonadotropin after gonadotropin-
' m! ` w6 p" Breleasing hormone stimulation. This is a sex-linked
8 L$ g9 ~' \3 S; z6 Yautosomal dominant disorder that affects only, K; I' K4 O* n2 Y) h7 Y
males; therefore, other male members of the family' f+ A! _/ w K( c% A
may have similar precocious puberty.3: `9 O/ D! C; u0 r
In our patient, physical examination was incon-
: |3 @. P' ?* h: a& asistent with true precocious puberty since his testi-; N N/ I- i, V5 I3 P O
cles were prepubertal in size. However, testotoxicosis. B& D, X( Q4 d* F. p) S1 P) y/ c
was in the differential diagnosis because his father
v5 c0 v: T& Z0 dstarted puberty somewhat early, and occasionally,
* O$ ~3 q" P4 ?) W z% H: B' itesticular enlargement is not that evident in the6 _- W+ I1 t1 ^$ W" Y: g) X
beginning of this process.1 In the absence of a neg-- X& V- \- A+ Z! s# l
ative initial history of androgen exposure, our
s- x. b- `5 Qbiggest concern was virilizing adrenal hyperplasia,( h3 a# i. a& k( S+ Z$ d) `
either 21-hydroxylase deficiency or 11-β hydroxylase% S+ r9 E v' d. ~' u
deficiency. Those diagnoses were excluded by find-" b: E7 \2 X" B& y0 J0 I( Z4 t
ing the normal level of adrenal steroids.
, F7 c5 N& M/ B4 nThe diagnosis of exogenous androgens was strongly- l. t* r$ ^! ]+ S1 d0 z
suspected in a follow-up visit after 4 months because
" |+ c+ e: F" Y s" A, Vthe physical examination revealed the complete disap-, \% A, i/ }$ l5 S( P i8 ]9 q5 v
pearance of pubic hair, normal growth velocity, and! e1 o% _0 b( T4 \0 v
decreased erections. The father admitted using a testos-
( {( N/ p9 h: _- P0 a h- zterone gel, which he concealed at first visit. He was, ]: e( w* I q8 V& B- T4 \3 [
using it rather frequently, twice a day. The Physicians’
; H2 L, n" z. @" WDesk Reference, or package insert of this product, gel or
/ \ n$ @7 _% p4 n, L$ G& Rcream, cautions about dermal testosterone transfer to2 ~# }) ~; F+ j
unprotected females through direct skin exposure.
" [& H* D0 ]" w, {; H9 RSerum testosterone level was found to be 2 times the
]( N; \" j6 K* z+ B/ kbaseline value in those females who were exposed to. X% ` `/ V5 t( {, h0 Z/ {
even 15 minutes of direct skin contact with their male
) |6 V3 @) y' O7 D# ]1 I7 wpartners.6 However, when a shirt covered the applica-
! M% l# ], W" ~$ W Vtion site, this testosterone transfer was prevented.+ u! n" q9 |2 W0 \
Our patient’s testosterone level was 60 ng/mL,
. {2 G: {* S; m: T; \! B1 wwhich was clearly high. Some studies suggest that+ ^. B: j: Y2 P; p7 l% h
dermal conversion of testosterone to dihydrotestos-
& y* D, D+ M; E, S3 r. Z% Gterone, which is a more potent metabolite, is more+ {. k8 f' ?: b& b
active in young children exposed to testosterone
5 K. G( ~) Y% s. ?exogenously7; however, we did not measure a dihy-% x7 M! L+ g- Q8 n9 R2 Q
drotestosterone level in our patient. In addition to
3 ]9 k4 a6 T- U4 i" t ~. wvirilization, exposure to exogenous testosterone in
+ f% K# e, J2 y2 h8 vchildren results in an increase in growth velocity and9 z& D3 ^7 R( ^+ t H
advanced bone age, as seen in our patient.
$ |# Q$ ~& F' g3 Z; ~% i1 d% TThe long-term effect of androgen exposure during+ z4 g5 V! R8 E1 e+ j H
early childhood on pubertal development and final0 Q. Y) R: Q4 D7 y0 ^3 y& i
adult height are not fully known and always remain
% @! d) `9 C2 v# D2 w( j* fa concern. Children treated with short-term testos-
( i( l. r% O) m+ A! M' L. u3 |: q" g" P' Fterone injection or topical androgen may exhibit some: G; } q$ u7 ^
acceleration of the skeletal maturation; however, after
$ G0 |+ U1 q3 U0 e# `cessation of treatment, the rate of bone maturation( q+ r3 B9 r" E/ ^
decelerates and gradually returns to normal.8,9
; D/ s( m8 J6 `' SThere are conflicting reports and controversy; r6 H0 g5 t, h& H. u
over the effect of early androgen exposure on adult
' `9 U5 A2 W0 m& ?9 ~penile length.10,11 Some reports suggest subnormal6 y- G6 c/ U+ R$ N
adult penile length, apparently because of downreg-- h' O P; H, D4 w) {% k" M, _
ulation of androgen receptor number.10,12 However,
1 N$ L* o" k3 x) ASutherland et al13 did not find a correlation between; o( e* I1 c$ j! C
childhood testosterone exposure and reduced adult. ~% [$ I4 b2 |
penile length in clinical studies.- G+ z7 e7 K3 I4 f; C; R. Y7 b
Nonetheless, we do not believe our patient is& p$ |3 n4 U# L8 K* B( g7 o
going to experience any of the untoward effects from
9 {, p( S B0 B4 ], mtestosterone exposure as mentioned earlier because" g3 d) c7 q* u: _
the exposure was not for a prolonged period of time.) m. P0 J& X' L$ g# h. y
Although the bone age was advanced at the time of
* c3 n, k6 i0 Q3 ]/ g+ U8 T4 n/ bdiagnosis, the child had a normal growth velocity at
6 T. \. g2 Q* [6 }$ Mthe follow-up visit. It is hoped that his final adult& O, |; T8 a# G& y. U' d. k
height will not be affected.
# d' f- m( G- v: `Although rarely reported, the widespread avail-/ |# {- J$ Z- ?$ O0 A
ability of androgen products in our society may5 X4 a1 f* v/ @' C: K
indeed cause more virilization in male or female
/ @0 { D6 @6 k0 @; Z8 R+ M% hchildren than one would realize. Exposure to andro-
2 Q) r' F$ r+ E# ~, a, |gen products must be considered and specific ques-
) d5 s$ _( q9 C/ k! T& H) otioning about the use of a testosterone product or
2 \, z1 D0 B1 S6 tgel should be asked of the family members during) f/ u6 C1 J9 a( s8 x5 T
the evaluation of any children who present with vir-
' k. M- o m/ ~: I7 dilization or peripheral precocious puberty. The diag-
" `# a4 Z* T. x. g' bnosis can be established by just a few tests and by3 y/ i8 H2 D' m
appropriate history. The inability to obtain such a
4 K- ^4 K% d- r2 mhistory, or failure to ask the specific questions, may0 |) K5 l3 ~. X3 F" W$ t J0 m: N
result in extensive, unnecessary, and expensive8 S; S$ r/ @/ U. U- D; X5 g" f9 d& y8 R
investigation. The primary care physician should be, p. \# J3 t7 C! ^6 d' }8 r) ^
aware of this fact, because most of these children5 w R2 t) ^* a. T! ]3 T
may initially present in their practice. The Physicians’. |! {9 i0 c$ R+ T
Desk Reference and package insert should also put a% q" o5 k$ z$ m
warning about the virilizing effect on a male or; n8 k& l' R3 q, s; ~+ e! F
female child who might come in contact with some-
7 w8 }3 X9 P2 |; c; R. q( xone using any of these products.% P! J t) n j
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, Y* U% d' M$ W* V2002: 565-628.
9 k$ n% V2 P; S: K1 P. B% B2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
# O8 U0 M! j8 \% k+ f, ~" r1 ~puberty in children with tumours of the suprasellar pineal) U3 v+ Z1 J( F8 J
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areas: organic central precocious puberty. Acta Paediatr.
$ w+ g& G' u' w, }4 `0 G. n2001;90:751-756.
4 x6 D# a& ^4 }) s# B+ _3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed." ?# e, n5 }" _7 r
Pediatric Endocrinology. 4th ed. New York, NY: Marcel3 K! }7 r, w/ W$ s8 b4 }; q+ X5 P
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exposure to testosterone. Pediatrics. 1999;104:e23.7 D1 `; |4 ^% V |
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3 [2 ^2 p' q9 r+ Z' q/ dSkeletal Development of the Hand and Wrist. 2nd ed.7 q! e6 G% i! |
Stanford, CA: Stanford University Press; 1959.9 H+ n5 |: Z. _/ z" L2 w9 o
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Economics Company, Inc; 2004:3239-3241.; \8 M, V1 r, S- Q. ~
7. Klugo RC, Cerny JC. Response of micropenis to topical" D" n+ `. M( Y' ?0 I
testosterone and gonadotropin. J Urol. 1978;119:' Z: i& X; P$ E4 l' L2 ^- Q& T
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8. Guthrie RD, Smith DW, Graham CB. Testosterone$ q3 f8 @9 m( v8 ]8 V( T
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