Hagen S1, Stark D2, Glazener C3, Sinclair L4, Wilson D5, Norrie J6, Dickson S1, McPherson G3, Logan J1, Frawley H7, Moore K8, Walker A6
1. NMAHP Research Unit, Glasgow, 2. Leicester Royal Infirmary, 3. Health Services Research Unit, Aberdeen, 4. NHS Ayrshire and Arran, 5. Dunedin School of Medicine, University of Otago, 6. University of Glasgow, 7. University of Melbourne, 8. St George Hospital, University of New South Wales