[1] Guangxi Acad Med Sci, Res Ctr Hosp Management & Med Prevent, Peoples Hosp Guangxi Zhuang Autonomous Reg, Nanning, Peoples R China
[2] Shandong Acad Social Sci, Inst Fiscal & Finance, Jinan, Peoples R China
[3] Univ Surrey, Surrey Int Inst, Fac Arts & Social Sci, Guildford, England
[4] Shandong Acad Social Sci, Jinan 250002, Peoples R China