1. School of Medicine, Dentistry & Nursing, University of Glasgow , 57-61 Oakfield Avenue, Glasgow, G12 8LL , UK
2. NHS Greater Glasgow and Clyde , 1055 Great Western Rd, Glasgow, G12 0XH , UK
3. School of Cardiovascular & Metabolic Health, University of Glasgow , 126 University Place, Glasgow, G12 8TA , UK
4. Institute of Health Research, Notre Dame University of Australia , 32 Mouat St, Fremantle, WA 6160 , Australia
5. Mary MacKillop Institute for Health Research, Australia Catholic University , 215 Spring Street, Melbourne, VIC 3000 , Australia