1. Eun Sam Sung Plastic and Reconstructive Hospital, Bu-Cheon, Korea.
2. Department of Anesthesiology and Pain Medicine, College of Medicine, Chosun University, Gwangju, Korea.
3. Department of Obestetrics and Gynecology, College of Medicine, Chosun University, JB Stem Cell Institute, Inc., Gwangju, Korea.
4. Department of Anesthesiology, Yanjishiyiyuan Hospital, Jilinsheng, China.