1. Center for International Health Research, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI, USA
2. Department of Pediatrics, The Warren Alpert Medical School of Brown University, Providence, RI, USA
3. Institute of Environmental Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
4. Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
5. Department of Health Convergence, Ewha Womans University, Seoul, Republic of Korea