
Dr. med. Christian-Friedrich Jehn
Hematologist
- Dr. med. Christian-Friedrich Jehn is a Hematologist-Oncologist in Hamburg, Germany with experience of over 20+ years.
- He is a member of the BGIM (Berlin Society for Internal Medicine), DGHO (German Society for Hematology and Medical Oncology), and ASCO (American Society of Clinical Oncology).
- He received his medical education at the Charite University Hospital Berlin Mitte, Medical Clinic: Hematology/Oncology, and did further training with a focus on hematology, oncology, and tumor immunology.
- His areas of interest are the treatment of stem cell transplant (autologous, allogenic & umbilical cord blood transplant), leukemia and lymphoma, bleeding disorders, blood clots, anemia, etc.
- Dr. Jehn has written well-researched articles for national and international journals.
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- Dr. med. Christian-Friedrich Jehn is a Hematologist-Oncologist in Hamburg, Germany with experience of over 20+ years.
- He is a member of the BGIM (Berlin Society for Internal Medicine), DGHO (German Society for Hematology and Medical Oncology), and ASCO (American Society of Clinical Oncology).
- He received his medical education at the Charite University Hospital Berlin Mitte, Medical Clinic: Hematology/Oncology, and did further training with a focus on hematology, oncology, and tumor immunology.
- His areas of interest are the treatment of stem cell transplant (autologous, allogenic & umbilical cord blood transplant), leukemia and lymphoma, bleeding disorders, blood clots, anemia, etc.
- Dr. Jehn has written well-researched articles for national and international journals.

Dr. Farouk Dahmash
Hematologist
- Dr. Farouk Dahmash is a Hematologist-Oncologist in Hamburg, Germany with experience of over 15+ years.
- He received his medical education at the University of Erlangen, Nuremberg, and did further training for internal medicine at Capio Hospital Otterndorf in 2007.
- He has also acted as an Investigator in a clinical study: ALL-GMALL, AML OSHO 2002 and 2004, and Hodgkin lymphoma.
- His areas of interest are the treatment of stem cell transplant (autologous, allogenic & umbilical cord blood transplant), leukemia and lymphoma, bleeding disorders, blood clots, anemia, etc.
- He has written for national and international journals along with attending seminars on oncology.
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- Dr. Farouk Dahmash is a Hematologist-Oncologist in Hamburg, Germany with experience of over 15+ years.
- He received his medical education at the University of Erlangen, Nuremberg, and did further training for internal medicine at Capio Hospital Otterndorf in 2007.
- He has also acted as an Investigator in a clinical study: ALL-GMALL, AML OSHO 2002 and 2004, and Hodgkin lymphoma.
- His areas of interest are the treatment of stem cell transplant (autologous, allogenic & umbilical cord blood transplant), leukemia and lymphoma, bleeding disorders, blood clots, anemia, etc.
- He has written for national and international journals along with attending seminars on oncology.

Dr. med. Johannes Atta
Hematologist
- Dr. med. Johannes Atta is a skilled Haematologist & Oncologist with over 29 years of experience.
- He has specialised in internal medicine and has additional qualifications in haematology, oncology, infectiology, and medical quality management.
- He studied Medicine and Classical Studies at the Universities of Wurzburg and Frankfurt, followed by clinical electives (training) at the University of Western Australia and Harvard Medical School.
- Dr. Johannes is an active member of the German Society for Hematology and Oncology (DGHO) and the American Society of Clinical Oncology (ASCO).
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- Dr. med. Johannes Atta is a skilled Haematologist & Oncologist with over 29 years of experience.
- He has specialised in internal medicine and has additional qualifications in haematology, oncology, infectiology, and medical quality management.
- He studied Medicine and Classical Studies at the Universities of Wurzburg and Frankfurt, followed by clinical electives (training) at the University of Western Australia and Harvard Medical School.
- Dr. Johannes is an active member of the German Society for Hematology and Oncology (DGHO) and the American Society of Clinical Oncology (ASCO).
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