[1] Mem Sloan Kettering Canc Ctr, Nucl Med Serv, New York, NY 10021 USA
[2] Yale Univ, Internal Med, New Haven, CT USA
[3] San Lorenzino Hosp, Clin Cardiol, Cesena, Italy
[4] Wellington Hosp, Clin Imaging & Res Ctr, London, England
[5] British Cardiac Res Trust, London, England