1. Department of Anesthesiology and Pain Medicine, W Hospital, Daegu, Korea.
2. Cheon & Woo's Institute for Hand & Reconstructive Microsurgery, W Hospital, Daegu, Korea.
3. Department of Preventive Medicine, Keimyung University School of Medicine, Daegu, Korea.
4. Institute of Cancer Rehabilitation and Convalescence, Yoonsung Hospital, Cheongdo, Korea.