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Open Access

Subhealth: definition, criteria for diagnosis and potential prevalence in the central region of China

Guolin Li*, Fuxia Xie, Siyu Yan, Xiaofei Hu, Bo Jin, Jun Wang, Jinfeng Wu, Dazhong Yin* and Qingji Xie

BMC Public Health 2013, 13:446  doi:10.1186/1471-2458-13-446