1. Department of Anesthesiology and Perioperative Medicine, Xi'an People's Hospital (Xi'an Fourth Hospital), Northwest University, Xi'an, Shaanxi Province, China
2. Department of Plastic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
3. Department of Stomatology, Xi'an People's Hospital (Xi'an Fourth Hospital), Northwest University, Xi'an, Shaanxi Province, China