Cohort profile: Growing Up in Singapore Towards healthy Outcomes (GUSTO) birth cohort study.

Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, Singapore Institute for Clinical Sciences, Agency for Science and Technology Research (A*STAR), Brenner Centre for Molecular Medicine, Singapore, Liggins Institute, University of Auckland, Auckland, New Zealand, Medical Research Council Lifecourse Epidemiology Unit, Southampton, UK, NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK, Biostatistics Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore and KK Women’s and Children’s Hospital, Singapore