1 Clinical Unit, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK; School of Medicine, University of Liverpool, Liverpool, UK. Electronic address: g.gill@liverpool.ac.uk.
2 Institute of Cardiovascular Science, University College London, London, UK.
3 Department of Diabetes and Endocrinology, Sheffield Teaching Hospitals and University of Sheffield, Sheffield, UK.
4 Centre for Chronic Disease, Victoria University, Melbourne, VIC, Australia.
5 School of Clinical Sciences, University of Bristol, Bristol, UK.
6 Department of Diabetes and Endocrinology, School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa.
7 Department of Internal Medicine, Shree Hindu Mandal Hospital, Dar es Salaam, Tanzania.
8 MRC Epidemiology Unit, University of Cambridge, Cambridge, UK.
9 Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK.