[1] Zhejiang Univ, Sch Med, Dept Med Oncol, Affiliated Hosp 1, Hangzhou 310003, Zhejiang, Peoples R China
[2] Nanchang Univ, Affiliated Hosp 1, Dept Oncol, Nanchang 330006, Peoples R China
[3] Beijing Merck Pharmaceut Consulting Ltd, Beijing 100022, Peoples R China