1. Division of Child and Adolescent Psychiatry; Department of Psychiatry; Seoul National University College of Medicine; Seoul Korea
2. Department of Preventive Medicine; Seoul National University College of Medicine and Institute of Environmental Medicine; Seoul Korea
3. Department of Psychiatry; Ilsan Paik Hospital; Inje University College of Medicine; Goyang, Republic of Korea Korea
4. Department of Psychiatry; Gil Medical Center; Gachon University of Medicine and Science; Incheon Korea
5. Department of Psychiatry; Gangnam Eulji Hospital; Eulji University; Seoul Korea