1. Department of Burns and Plastic Surgery, Central Hostpital Affiliated to Shandong First Medical University, Jinan, Shandong, China
2. Department of Nursing, Central Hostpital Affiliated to Shandong First Medical University, Jinan, Shandong, China
3. Department of Digestive Endoscopy, Central Hostpital Affiliated to Shandong First Medical University, Jinan, Shandong, China