1970 American Association of Immunologists
1974 American Society for Histocompatibility and Immunogenetics
(President 1986-1987)
1974 American Association of Blood Banks
1983 Transplantation Society
1984 Pennsylvania Association of Clinical Pathologists
1985 International Society for Heart and LungTransplantation
1986 American Society of Transplant Physicians
1987 Brazilian Histocompatibility Society (honorary member)


EDITORIAL BOARDS

Transplantation
Journal of Heart and Lung Transplantation
Transplantation Science
Human Immunology
Transplant Immunology