1 Medicines Monitoring Unit & Hypertension Research Centre, Ninewells Hospital and Medical School, University of Dundee, Dundee DD2 1GZ, UK.
2 Faculty of Medicine, School of Public Health, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
3 Robertson Centre for Biostatistics, University of Glasgow, Boyd Orr Building, Glasgow G12 8QQ, UK.
4 Institute of Cardiovascular Sciences, University College London, Maple House, 149 Tottenham Court Road, London W1T 7DN, UK.
5 Centre of Clinical Pharmacology, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
6 Division of Molecular and Clinical Medicine, School of Medicine, University of Dundee, Dundee DD1 4HN, UK.
7 Centre for Cardiovascular Science, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh BioQuarter, 47 Little France Crescent, Edinburgh EH16 4TJ, UK.