1. The Generation R Study Group; Erasmus Medical Centre; Rotterdam The Netherlands
2. Department of Pediatrics; Erasmus Medical Centre; Rotterdam The Netherlands
3. Department of Epidemiology; Erasmus Medical Centre; Rotterdam The Netherlands
4. Department of Internal Medicine; Erasmus Medical Centre; Rotterdam The Netherlands
5. Department of Public Health; Erasmus Medical Centre; Rotterdam The Netherlands
6. Department of Obstetrics and Gynecology; Erasmus Medical Centre; Rotterdam The Netherlands