[1] Binzhou Med Univ, Dept Appl Psychol, Med Humanities Res Ctr, Yantai, Peoples R China
[2] Affiliated Qingdao Univ, Yantai Yuhuangding Hosp, Dept Cardiol, Yantai, Peoples R China
[3] Univ Nebraska Med Ctr, Coll Publ Hlth, Dept Hlth Serv Res & Adm, Omaha, NE USA
[4] Binzhou Med Univ, Nursing Dept, Yantai Affiliated Hosp, Yantai, Peoples R China
[5] Binzhou Med Univ, Yantai Affiliated Hosp, Yantai, Peoples R China
[6] Shandong Energy Zibo Min Grp Co Ltd, Med Dept, Cent Hosp, Zibo, Peoples R China
[7] Weihai Municipal Hosp, Dept Med, Weihai, Peoples R China
[8] Binzhou Cent Hosp, Dept Internal Med Oncol, Binzhou, Peoples R China
[9] Penglai Peoples Hosp, Dept Obstet & Gynecol, Yantai, Peoples R China
[10] Univ Nebraska, Grace Abbott Sch Social Work, 6001 Dodge St, Omaha, NE 68182 USA