[1] AMER RED CROSS, BLOOD SERV NE REG, BOSTON, MA 02115 USA
[2] CTR BLOOD RES, BOSTON, MA 02115 USA
[3] BLOOD CTR SE WISCONSIN, MILWAUKEE, WI 53201 USA
[4] GEORGETOWN UNIV, SCH MED, DIV IMMUNOL ONCOL, WASHINGTON, DC 20007 USA
[5] USN, MED RES INST, BETHESDA, MD 20814 USA
[6] HARVARD UNIV, SCH MED, DEPT PATHOL, BOSTON, MA 02115 USA
[7] HARVARD UNIV, SCH MED, DEPT PEDIAT, BOSTON, MA 02115 USA