1. Department of Radiotherapy, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
2. Department of Nursing, Danzhou People's Hospital, Danzhou, Hainan, China
3. Union, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
4. Department of Physical Examination, The Second Affiliated Hospital of Hainan Medical College, Haikou, Hainan, China