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Changes in twinning rate: Italy 1950-1996.
Astolfi P, Ulizzi L, Zonta LA. Astolfi P, et al. Hum Reprod. 2003 Jan;18(1):207-11. doi: 10.1093/humrep/deg036. Hum Reprod. 2003. PMID: 12525468
Delayed maternity and risk at delivery.
Astolfi P, Zonta LA. Astolfi P, et al. Paediatr Perinat Epidemiol. 2002 Jan;16(1):67-72. doi: 10.1046/j.1365-3016.2002.00375.x. Paediatr Perinat Epidemiol. 2002. PMID: 11856456
Sex ratio and parental age gap.
Astolfi P, Zonta LA. Astolfi P, et al. Hum Biol. 1999 Feb;71(1):135-41. Hum Biol. 1999. PMID: 9972104
83 results