@article{Maconochie1997,
author = {Maconochie, N. and Roman, E.},
title= {Sex ratios: Are there natural variations within the human population? BJOG},
year = {1997},
doi = {10.1111/j.1471-0528.1997.tb12065.x},
volume = {104},
number = {9},
pages = {1050--1053},
}