1. Faculty of Health and Medicine, Lancaster University; Division of Health Research; C07 Furness Building Lancaster UK LA1 4YG
2. Universidad de Valparaíso; Escuela de Psicología, Facultad de Medicina; Av Brasil 2140 Valparaíso Chile
3. University of Oxford; National Perinatal Epidemiology Unit (NPEU); Old Road Campus Oxford UK OX3 7LF
4. University College London; Mental Health Sciences Unit; Charles Bell House 67-73 Riding House Street London UK W1W 7EJ
5. North East London NHS Foundation Trust, Goodmayes Hospital; Research and Development Department; Barley Lane, Goodmayes Essex London UK IG3 8XJ
6. University of Manchester; Personal Social Services Research Unit; Dover Street Building Oxford Road Manchester UK M13 9PL