[1] Zhongda Hosp Southeast Univ, Dept Gynecol, Nanjing, Jiangsu, Peoples R China
[2] Kings Coll London, Cicely Saunders Inst Palliat Care Policy & Rehabil, Florence Nightingale Fac Nursing Midwifery & Palli, Policy & Rehabil, London, England
[3] Huaian Second Peoples Hosp, Dept Nursing, Huaian, Jiangsu, Peoples R China
[4] Nanjing Drum Tower Hosp, Dept Rheumatol & Immunol, Nanjing, Jiangsu, Peoples R China