1. The University of Sheffield; Department of Cardiovascular Science; Sheffield UK
2. Cairo University; Kasr Al-Ainy School of Medicine; Cairo Egypt
3. The Wirral University Teaching Hospitals; Department of Medicine; Arrowe Park Road CH49 5PE Upton, Wirral Merseyside UK
4. Damascus University; Faculty of Medicine; Mazzeh Damascus Syrian Arab Republic
5. AstraZeneca; Quantitative Clinical Pharmacology; KC 547 Pepparedsleden 1 Mölndal Sweden SE-431 83