1. Department of Anesthesiology; Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine; Kaohsiung Taiwan
2. Department of Plastic and Reconstructive Surgery; Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine; Kaohsiung Taiwan
3. Department of Otolaryngology; Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine; Kaohsiung Taiwan