1. Department of Acupoint, College of Korean Medicine, Dongguk University, Gyeonggi-do 10326, Republic of Korea
2. Addiction Research Center and Department of Physiology, College of Korean Medicine, Daegu Haany University, Daegu 42158, Republic of Korea
3. Addiction Research Center and Department of Secondary Special Education, Daegu Haany University, Daegu 42158, Republic of Korea
4. Department of Anesthesiology, Wake Forest Baptist Medical Center, Winston Salem, NC 27106, USA