1. Warwick Medical School; Division of Mental Health and Wellbeing; University of Warwick Gibbett Hill Road Coventry UK CV4 7LF
2. University of Cambridge; Institute of Public Health; Forvie Site Robinson Way Cambridge UK CB2 0SR
3. University of Nottingham; Institute of Mental Health; Triumph Road Nottingham UK NG7 2TU
4. MRC Biostatistics Unit; Cambridge UK
5. Plymouth University Peninsula Schools of Medicine and Dentistry; The John Bull Building, Tamar Science Park, Research Way Plymouth UK PL6 8BU