1. Department of Psychiatry, Cha University Ilsan Medical Center, Goyang 10223, Republic of Korea
2. Department of Psychiatry, Medical Corps of the 6th Marine Brigade, Republic of Korea Navy, Incheon 23103, Republic of Korea
3. Department of Biostatistics, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Republic of Korea
4. Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Republic of Korea
5. Workplace Mental Health Institute, Kangbuk Samsung Hospital, Seoul 03181, Republic of Korea