End of the trend? A 12-year study of age at menarche.
نویسندگان
چکیده
A 12-year study of menarchial age in all girls entering the University College of Swansea (1959-70) suggests that the downward trend in age at menarche has ceased in Britain. The turning point appears to have occurred in girls born about 1946.
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ورودعنوان ژورنال:
- British medical journal
دوره 3 5874 شماره
صفحات -
تاریخ انتشار 1973