Curtin University, University of Nottingham, University of Nottingham, University of Nottingham, Curtin University, South African Medical Research Council - Alcohol, Tobacco and Other Drug Research Unit, University of Cambridge, International Centre for Diarrheal Disease Research (icddr,b), University of New South Wales (UNSW) - School of Psychology, Mustansiriyah University and University of Nottingham - School of Life Sciences