Cohort Profile: the Born in Bradford multi-ethnic family cohort study.

Bradford Institute for Health Research, Bradford Teaching Hospitals Foundation Trust, Bradford, UK, School of Health Studies, University of Bradford, Bradford, UK, Edinburgh Ethnicity and Health Research Group, Centre for Population Health Sciences, College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, UK, School of Sport, Exercise and Health Sciences, Loughborough University, Leicestershire, UK, Medical Research Council Centre for Causal Analyses in Translational Epidemiology, School of Social and Community Medicine, University of Bristol, Bristol, UK, Paediatric Epidemiology Group, Centre for Epidemiology and Biostatistics, Leeds Institute of Genetics, Health and Therapeutics, Faculty of Medicine and Health, University of Leeds, Leeds, UK and Department of Health Sciences, University of York, York, UK