1Department of General Surgery, Minimally Invasive Surgery Center, Second People’s Hospital of Hunan Province (Hunan Brain Hospital), Changsha, China 2Department of Oncology, No. 971 Navy Hospital of the Chinese People’s Liberation Army, Qingdao, China 3Department of Nursing, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Hunan Cancer Hospital, Changsha, China 4Department of Hospice, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Hunan Cancer Hospital, Changsha, China 5Department of Pathology, Affiliated Hospital of Hebei University, Baoding, China