[1] Nanjing Univ, Nanjing Stomatol Hosp, Nursing Dept, Med Sch, 30 Zhongyang Rd, Nanjing 210008, Jiangsu, Peoples R China
[2] Nanjing Univ Chinese Med, Jiangsu Prov Hosp Chinese Med, Dept Urol, Affiliated Hosp, 155 Hanzhong Rd, Nanjing 210029, Jiangsu, Peoples R China
[3] Nanjing Univ, Nanjing Stomatol Hosp, Dept Oral & Maxillofacial Surg, Med Sch, 30 Zhongyang Rd, Nanjing 210008, Peoples R China