1. Department of Medical Oncology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, China (mainland)
2. Department of Medical Oncology, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong, China (mainland)
3. Department of Interventional Therapy, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong, China (mainland)
4. Department of Radiotherapy, Cancer Center, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland)