Affiliation: | 1. Department of Palliative Care, Rehabilitation and Integrative Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA;2. Division of Hematology and Medical Oncology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea Contributed equally;3. Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA |