Free University of Berlin, Berlin, Germany
Behring-Krankenhaus, Berlin, Germany
Somerset Medical Center, Somerset, NJ
Internal Medicine, Mayo Graduate School of Medicine, Mayo Clinic, Rochester, MN
Hematology, Mayo Graduate School of Medicine, Mayo Clinic, Rochester, MN
American Board of Internal Medicine
American Board of Internal Medicine - Hematology
American Board of Internal Medicine - Geriatric Medicine
Professor of Medicine
See a listing of publications on PubMed, a service of the National Library of medicine.
See a description of research activities.

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