Hongjie Yu, Qiaohong Liao, Yuan Yuan, Lei Zhou, Nijuan Xiang, Yang Huai, Xiuhua Guo, Yingdong Zheng, H Rogier van Doorn, Jeremy Farrar, Zhancheng Gao, Zijian Feng, Yu Wang, Weizhong Yang
BMJ
September 28, 2010
DOI: 10.1136/bmj.c4779