Acta Obstetricia Et Gynecologica Scandinavica · 1989 · 12 citations · 9 references
MedicineMaternal HealthObstetricsMaternal-fetal MedicineObstetric ComplicationsReproductive MedicinePlacental BiologyPlacental DisordersPregnancySex RatioMaternal Age DistributionMaternal Age EffectsPlacental ComplicationsSex Ratios At Birth
In the authors' Department, 144 cases of placenta praevia were treated in the course of 15 years. This number amounted to 0.54% of all births. The sex ratio of fetuses in association with this complication was 166.6, which exceeds that of all neonates during the same period of time. A preponderance of male babies was noted when the material was further analysed according to maternal age, parity and neonatal birth weight.
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NEONATAL MORTALITY, THE MALE DISADVANTAGE
Richard L. Naeye, Leslie S. Burt, David L. Wright et al. · PEDIATRICS · 1971 · 298 citations
Overripeness of the egg as a cause of twinning and teratogenesis: a review.
Emil Witschi · PubMed · 1952 · 123 citations
Birth order, parental ages, and sex of off-spring.
E. Novitski, A. W. Kimball · PubMed · 1958 · 79 citations