No abstract available
MeSH terms
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Anemia, Sickle Cell / epidemiology*
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Blood Donors*
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Cohort Studies
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Costa Rica
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Female
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Fetal Hemoglobin / analysis
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Glucosephosphate Dehydrogenase Deficiency / epidemiology*
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Humans
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Male
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Mass Screening
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Thalassemia / epidemiology