作者单位:Department of Psychology and Health Sciences Research Institute, Warwick Medical School, University[1]National Perinatal Epidemiology Unit, University of Oxford, Headington Oxford, United Kingdom[2]Department of Epidemiology and Public Health, University College London, London WC1E 6BT, United[3]Institute for Social and Economic Research (ISER), University of Essex, Colchester, United Kingdom[4]