1. Saw Swee Hock School of Public Health National University of Singapore and National University Health System Singapore
2. Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine National University of Singapore Singapore
3. Centre for Sport and Exercise Sciences University of Malaya Kuala Lumpur Malaysia
4. Institute for Social Medicine, Epidemiology and Health Economics Charite University Medical Centre Berlin Berlin Germany