[1] Columbia Univ, Med Ctr, Ctr Intervent Vasc Therapy, 177 Ft Washington Ave,6th Floor, New York, NY 10032 USA
[2] Cardiovasc Res Fdn, 1700 Broadway,8th Floor, New York, NY 10019 USA
[3] GJNH, West Scotland Heart & Lung Ctr, Agamemnon St, Glasgow G81 4DY, Lanark, Scotland
[4] Kings Coll London, James Black Ctr, Dept Cardiol, Sch Med, Denmark Hill, London SE5 9RS, England
[5] St George Hosp, Dept Cardiol, Blackshaw Rd, London SW17 0QT, England