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Human Biology|February 11, 1999
Sex ratio and parental age gapP Astolfi, L A Zonta
Human Reproduction (Oxford, England)|November 5, 1999
Risks of preterm delivery and association with maternal age, birth order, and fetal genderP Astolfi, L A Zonta
Human Reproduction (Oxford, England)|December 22, 1999
Reduced male births in major Italian citiesP Astolfi, L A Zonta
Human Reproduction (Oxford, England)|August 21, 2004
Late paternity and stillbirth riskP Astolfi, A De Pasquale, L A Zonta
Human Biology|October 10, 2002
Absence of selection on birth weight in modern ItalyL Ulizzi
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