1. Department of Anesthesiology and Pain Medicine, Korea University Anam Hospital, Seoul, Korea.
2. Department of Anesthesiology and Pain Medicine, Changwon Hanmaeum Hospital, Changwon, Korea.
3. Korea University Ansan Hospital, Seoul, Korea.
4. Yeongjusi Health Center, Yeongju, Korea.
5. Department of Commercialization of Biomedical Technology, Viva Innovation Co., Ltd., Seoul, Korea.
6. Department of Anesthesiology and Pain Medicine, College of Medicine, Korea University, Seoul, Korea.