1. Behavioural and Brain Sciences Unit; UCL Institute of Child Health; London UK
2. Department of Non-Communicable Disease Epidemiology; London School of Hygiene and Tropical Medicine; London UK
3. Department of Medical Statistics; London School of Hygiene and Tropical Medicine; London UK
4. The Generation R Study Group; Erasmus Medical Centre; Rotterdam the Netherlands
5. Department of Epidemiology; Erasmus Medical Centre; Rotterdam the Netherlands
6. Department of Paediatrics; Erasmus Medical Centre - Sophia Children's Hospital; Rotterdam the Netherlands
7. Department of Child and Adolescent Psychiatry and Psychology; Erasmus Medical Centre - Sophia Children's Hospital; Rotterdam the Netherlands
8. Department of Obstetrics and Gynaecology; Erasmus Medical Centre; Rotterdam the Netherlands
9. Department of Psychiatry; Erasmus Medical Centre; Rotterdam the Netherlands