| 21. | They convened, in San Francisco, at an American Society of Hematology conference.
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| 22. | American Society of Hematology : http : / / www . hematology . org/
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| 23. | American Society of Hematology : http : / / www . hematology . org/
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| 24. | Bulgaria is in the process of reforming its system of 28 regional hematology centers.
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| 25. | With these discoveries, hematology, a new field of medicine, was established.
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| 26. | Hirschfeld was the author of many publications in the fields of hematology and histology.
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| 27. | He is board certified in both hematology and internal medicine and remains clinically active.
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| 28. | Among his research interests were hematology and nutrition.
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| 29. | He trained in pediatrics and hematology at Children's Hospital Medical center in Boston.
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| 30. | Leslie Laufman, M . D ., Hematology Oncology Consultants, Columbus, Ohio.
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