Fig. 1

a and b Breast curves of 39 girls with TS who reached final breast stage and 139 normally developing girls. We computed the percentage of girls in each breast stage every 0.5 years starting at age 12 years and graphed them as the curves of age composition in breast stages B3 to B5 for girls with TS (the curve for girls with B2 was excluded because of the small sample size) (a) and normally developing Chinese girls (b)