[1] VET ADM MED CTR W ROXBURY, CARDIOL SECT, BOSTON, MA 02132 USA
[2] VET ADM MED CTR W ROXBURY, NUCL MED SERV, BOSTON, MA 02132 USA
[3] BRIGHAM & WOMENS HOSP, DEPT MED, BOSTON, MA 02115 USA
[4] BRIGHAM & WOMENS HOSP, DEPT RADIOL, BOSTON, MA 02115 USA
[5] HARVARD UNIV, SCH MED, BOSTON, MA 02115 USA