[Li Q.; Li; Lyu; Wang; Ling] Hengyang Medical College, University of South China, The Second Affiliated Hospital, Dept of Physiology, Hunan, Hengyang, 421001, China
[Feng] Dept of Social Medicine and Health Management, Public Health College, The Second Affiliated Hospital, University of South China, Hunan, Hengyang, 421001, China
[Yan] Hengyang Medical College, University of South China, The Second Affiliated Hospital, Hunan, Hengyang, 421001, China
[Yan C.-Q.] Health Management Center, University of South China, The Second Affiliated Hospital, Hunan, Hengyang, 421001, China
