1 Department of Medicine, University of British Columbia, St Paul's Hospital, Vancouver, BC, Canada.
2 Center on Child Protection at the University of Indonesia, Gedung Nusantara II (Ex PAU Ekonomi) FISIP, Kampus UI, Depok, Indonesia.
3 Department of Population and Family Health, Columbia University Mailman School of Public Health, New York, NY 10032, USA. Electronic address: ls2302@columbia.edu.