1. Division of Chronic Disease Research Across the Lifecourse Harvard Medical School and Harvard Pilgrim Health Care Institute Boston Massachusetts USA
2. Division of Gastroenterology, Hepatology and Nutrition Boston Children's Hospital Boston Massachusetts USA
3. Department of Population Health Sciences, Bristol Medical School University of Bristol Bristol UK
4. Medical Research Council Integrative Epidemiology Unit University of Bristol Bristol UK
5. National Institute for Health Research Bristol Biomedical Research Centre University of Bristol Bristol UK
6. Departments of Pediatrics and of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine McGill University Montreal Quebec Canada
7. Department of Translational Health Sciences, Bristol Medical School University of Bristol Bristol UK
8. Department of Obstetrics National Research and Applied Medicine Mother and Child Centre Minsk Belarus