No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Female
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Follow-Up Studies
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Humans
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Hydroxyurea / administration & dosage*
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Incidence
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Male
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Middle Aged
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Neoplasms, Second Primary / mortality*
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Phlebotomy*
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Polycythemia Vera* / mortality
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Polycythemia Vera* / therapy