1Department of Obstetrics and Gynecology, National University Hospital, National University of Singapore, Singapore
2Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
3Departments of Epidemiology, Biostatistics and Occupational Health and of Pediatrics, McGill University Faculty of Medicine, Montreal, Quebec, Canada
4Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA.
Address correspondence to: Eu-Leong Yong, FRCOG, PhD, Department of Obstetrics and Gynaecology, National University of Singapore, Yong Loo Lin School of Medicine, NUHS Tower Block, 1E Kent Ridge Road, Level 12, Singapore 119228. E-mail: [email protected]
Received 25 January, 2019
Revised 14 March, 2019
Accepted 14 March, 2019
SG and ISP are joint first authors.
Authors’ contributions: ELY, SL, and JAC conceived and designed the study, provided methodological inputs and statistical analyses, and wrote the manuscript. SG, ISP, and MSK performed statistical analysis, provided methodological inputs, and wrote the manuscript. WPPT contributed to project administration, data acquisition, and study design, and wrote the manuscript. All authors saw and approved the final manuscript.
Funding/support: This study was partially funded by a Singapore National Medical Research Council Grant (Number: NMRC/CSA-SI/0010/2017) to ELY.
Financial disclosure/conflicts of interest: None reported.
Data Statement: Due to the confidential nature of the data collected in the study, the data cannot be made publicly available. Data sharing and collaboration is available on application to Integrated Women's Health Governance Committee by email to the corresponding author at [email protected].
ORCID identifier: 0000-0001-6511-770X
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