TY  - JOUR
A1  - Maconochie, N.
A1  - Roman, E.
T1  - Sex ratios: Are there natural variations within the human population? BJOG
Y1  - 1997
DO  - 10.1111/j.1471-0528.1997.tb12065.x
VL  - 104
IS  - 9

ER  -