@article{Hesketh2005,
author = {Hesketh, T. and Lu, L. and Xing, Z.W.},
title= {The effect of China’s one-child family policy after 25 years},
year = {2005},
doi = {10.1056/NEJMhpr051833},
volume = {353},
number = {11},
pages = {1171--1176},
}