Haemostasis, Thrombosis and Vascular Biology Unit, University Department of Medicine, City Hospital, Birmingham B18 7QH
Correspondence to: A D Blann [email protected]
Accepted 22 December 2005
Further details and ongoing research are onbmj.com
Competing interests: ADB and GYHL have received research grants, sponsorship, and hospitality from Astra Zeneca, GlaxoSmithKline, and Sanofi-Aventis.