Hesketh Therese, Zhou Xudong, Wang Yun
Institute for Global Health, University College London, London, United Kingdom2Institute of Social Medicine, Zhejiang University, Zhejiang, China.
Institute of Social Medicine, Zhejiang University, Zhejiang, China.
JAMA. 2015;314(24):2619-20. doi: 10.1001/jama.2015.16279.