[1] ARMED FORCES INST PATHOL,DEPT CARDIOVASC PATHOL,WASHINGTON,DC 20306
[2] WALTER REED ARMY MED CTR,DEPT MED,WASHINGTON,DC 20012
[3] WALTER REED ARMY MED CTR,DEPT SURG,THORAC & CARDIOVASC SURG SERV,WASHINGTON,DC 20012
[4] NHLBI,PATHOL BRANCH,ULTRASTRUCT SECT,BETHESDA,MD 20014