1. Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seodaemun-gu, Seoul, Republic of Korea
2. Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seodaemun-gu, Seoul, Republic of Korea
3. Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Gyeonggi-do, Goyang, Republic of Korea
4. Division of Breast Surgery, Department of Surgery, Yonsei University College of Medicine, Seodaemun-gu, Seoul, Republic of Korea