1. Centre for Cohort Studies, Total Healthcare Centre, Kangbuk Samsung Hospital Sungkyunkwan University School of Medicine Seoul Korea
2. Department of The Environmental Health Centre, Wonju Severance Christian Hospital Yonsei University School of Medicine Wonju Korea
3. Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital Sungkyunkwan University School of Medicine Seoul Korea
4. Institute of Medical Research Sungkyunkwan University, School of Medicine Suwon Republic of Korea
5. Department of Obstetrics and Gynaecology, Kangbuk Samsung Hospital Sungkyunkwan University School of Medicine Seoul Korea
6. Department of Obstetrics and Gynaecology Seoul National University College of Medicine Seoul Korea
7. Departments of Epidemiology and Medicine, and Welch Center for Prevention, Epidemiology, and Clinical Research Johns Hopkins University Bloomberg School of Public Health Baltimore Maryland USA
8. Department of Clinical Research Design & Evaluation, SAIHST Sungkyunkwan University Seoul Korea
9. Department of Precision Medicine National Institute of Health, Korea Disease Control and Prevention Agency (KDCA) Cheongju Korea