[1] Peking Univ, Hosp 1, Dept Plast Surg & Burns, Beijing, Peoples R China
[2] Peking Univ, Acad Adv Interdisciplinary Studies, Beijing, Peoples R China
[3] Peking Univ, Hosp 1, Dept Cardiac Surg, Beijing, Peoples R China
[4] Peking Univ, Hosp 1, Dept Resp Med, Beijing, Peoples R China