1 Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG, UK. Stephanie.Read@ed.ac.uk.
2 Information Services Division, NHS National Services Scotland, Edinburgh, UK.
3 Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG, UK.
4 Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK.
5 Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.
6 Division of Cardiovascular & Diabetes Medicine, University of Dundee, Dundee, UK.
7 Metabolic Unit, Western General Hospital, Edinburgh, UK.