title: Secondary sex ratio in man in connection with certain clinical forms of pathology of pregnancy (placenta previa, hemorrhages).
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D010923:Placenta Previa / Q000453:epidemiology*; D006473:Postpartum Hemorrhage / Q000453:epidemiology*; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular / Q000453:epidemiology*; D012426:Russia; D012744:Sex Ratio; D014592:Uterine Hemorrhage / Q000453:epidemiology*