Keep up to date with the latest news and content from BMC Public Health and BioMed Central.
Shengsheng Liu, Anhua Bi, Dongbo Fu*, Hua Fu, Wei Luo, Xiaoying Ma and Liyan Zhuang
Corresponding author: Dongbo Fu firstname.lastname@example.org
BMC Public Health 2012, 12:1043
Fields marked * are required
BioMed Central Ltd unless otherwise stated. Part of Springer Science+Business Media.