1. Department of Nursing, Jiangsu College of Nursing, Huai’an, Jiangsu, China (mainland)
2. Department of General Surgery, Lian’shui County People’s Hospital, Lian’shui, Jiangsu, China (mainland)
3. Department of General Surgery, The Affiliated Huaian No.1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China (mainland)