@article{Ding2006,
author = {Ding, Qu Jian and Hesketh, Therese},
title= {Family size, fertility preferences, and sex ratio in China in the era of the one-child family policy: Results from national family planning and reproductive health survey},
year = {2006},
doi = {10.1136/bmj.38775.672662.80},
URL = {https://doi.org/10.1136/bmj.38775.672662.80},
volume = {333},
number = {7564},
pages = {371--373},
}