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To evaluate the relationship between duration of sexual abstinence and sperm selection on sperm DNA fragmentation (SDF).Prospective study based on normozoospermic individuals.Fertility and IVF unit and university unit for research.Two cohorts of normozoospermic individuals: 21 men (aged 25–35 years) attending a clinic and with clearly adverse female factors; and a group of 12 selected donors (aged...
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