The American Society of Human Genetics: Member, 1979-2004.

The American Society of Hematology: Member, 1989-present. www.hematology.org

Program Committee of the Pharmaceutical Aspects of Biotechnology and Gene Therapy Products- International Open Conference on Regulations, Standards, and Harmonization. Sponsored by USP and FIP. Supported by FDA-CBER, FDA-CDER, DD-Canada, IBAC, AAPS: Member, 1997.

Canadian Council of The American Society for Gene Therapy: Elected Member, 1997-2004.

Comitato Promotore, Italian Foundation for Research on Muscular Dystrophy and other Genetic Diseases: Member, Scientific Review Panel, 1997.

Scientific Committee on Hematopoietic Cell Gene Therapy, American Society of Gene Therapy: Member, 1997-2004.

Canadian Representative, Task Force Planning The Rome 1996 Workshop on Model Systems for the Study of Human Pathologies and Basic Biological Research, Sponsored by the Organization for Economic Cooperation and Development and the British Health Department: 1996.

International Society for Experimental Hematology: Member, 1996-2004.

International Society of Hematotherapy and Graft Engineering: Member, 1996-2004.

Clinical Laboratory Management Association: Member, 1996-2004.

American Society of Hematology Annual Meeting, New Approaches to Gene Therapy Simultaneous Session Moderator: 1996.

American Society for Human Genetics Annual Meeting, Cancer Genetics II, Simultaneous Session Moderator: 1998.

Scientific Chairman, The Ottawa/July 1995 Workshop on Gene Delivery Systems for Human Gene Therapy, sponsored by The Organization for Economic Cooperation and Development and the National Health Departments of 25 western countries: 1994.

National Institute for Health (USA), External Grant Referee (1990, 1991, 1994). The American Society for Cancer Research: Member, 1990-2004.

The 10th International Human Gene Mapping Workshop, Workshop on Neoplasia: Member, 1989.

Referee for : Blood, Experimental Hematology, Pathology, Genes, Chromosomes and Cancer, Leukemia and Lymphoma, Proceedings of the National Academy of Science (USA), Cancer Research, American Journal of Pathology , Human Gene Therapy, Journal of Cutaneous Medicine and Surgery, Bone Marrow Transplantation.