About the Authors

Min Kwon

Affiliation Addiction Clinic, Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea

Joon-Yeop Lee

Affiliation College of Medicine, The Catholic University of Korea, Seoul, South Korea

Wang-Youn Won

Affiliation Department of Psychiatry, Seoul St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea

Jae-Woo Park

Affiliation Department of Psychology, College of Social Science, The Catholic University of Korea, Bucheon, South Korea

Jung-Ah Min

Affiliation Department of Psychiatry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea

Changtae Hahn

Affiliation Department of Psychiatry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea

Xinyu Gu

Affiliation Addiction Research Institute, Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea

Ji-Hye Choi

Affiliation Addiction Research Institute, Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea

Dai-Jin Kim

kdj922@chollian.net

Affiliation Department of Psychiatry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MK J-YL D-JK. Performed the experiments: MK W-YW J-HC. Analyzed the data: MK J-WP. Contributed reagents/materials/analysis tools: J-AM CH. Wrote the paper: MK J-YL XG.