Keep up to date with the latest news and content from BMC Public Health and BioMed Central.
Peian Lou*, Yanan Zhu, Peipei Chen, Pan Zhang, Jiaxi Yu, Ning Zhang, Na Chen, Lei Zhang, Hongmin Wu and Jing Zhao
Corresponding author: Peian Lou firstname.lastname@example.org
BMC Public Health 2012, 12:287
These numbers are accesses on BioMed Central websites only, and an underestimate of total usage. More information
BioMed Central Ltd unless otherwise stated. Part of Springer Science+Business Media.