1. Department of Medical Oncology and Tongji Medical College, Huazhong University of Science and Technology, Hubei Cancer Hospital, Wuhan, Hubei, China.
2. Department of Radiation Oncology, Tongji Medical College, Huazhong University of Science and Technology, Hubei Cancer Hospital, Wuhan, Hubei, China.
3. Department of Palliative Care and Rehabilitation Medicine, The University of Texas, MD Anderson Cancer Center, Houston, Texas, USA.