@article{Hesketh2006,
author = {Hesketh, T. and Zhu, W.},
title= {Abnormal sex ratios in human populations: Causes and consequences},
year = {2006},
doi = {10.1073/pnas.0602203103},
journal = {Proceedings of the National Academy of Sciences},
volume = {103},
number = {36},
pages = {13271--13275},
}