Organization American College of Physicians

National Academy of Sciences

American Association for Artificial Intelligence (Fellow)

American Society for Clinical Investigation

American Clinical and Climatological Association (Fellow)

Association of American Physicians

American Medical Informatics Association (Founding Member)

American College of Medical Informatics (Founding Fellow)

Institute of Medicine

New York Academy of Medicine (Fellow)

Weizmann Institute of Science

Rockefeller University

International Bone Marrow Transplant Registry

Autologous Blood and Marrow Transplant Registry

Center for Advanced Studies in Leukemia

Armand Hammer Center for Advanced Studies in Nuclear Energy and Health

University of California, Los Angeles

Royal Society of Medicine

Russian Academy of Medical Science

American Board of Internal Medicine

American Association for the Advancement of Science

American Association of Immunologists

American Federation for Cancer Research

American Federation for Clinical Research

American Society for Clinical Oncology

American Society of Hematology

International Society of Hematology

International Society of Experimental Hematology

Temple University School of Medicine

Philadelphia Department of Health

State University of New York at Buffalo

Children's Hospital of Buffalo

Buffalo Academy of Medicine

Great Lakes Interurban Club

New York Academy of Sciences

American Medical Association

Ecology and Environment Inc.

University of Texas M.D. Anderson Cancer Center

Royal Society of Medicine

American Society of Clinical Oncology

University of Colorado, Denver

American Academy of Allergy, Asthma, and Immunology

American College of Chest Physicians

American Thoracic Society

American Federation for Clinical Research

Colorado Trudeau Society

European Respiratory Society

LAC+USC Medical Center

Boston University Medical Center

Beth Israel Deaconess Medical Center

American Society of Nephrology

Commonweath Hematology-Oncology

American Society of Hematology

American Society of Clinical Oncology

Massachusetts Medical Society

Massachusetts Society of Clinical Oncology