P. Astolfi, L.A beneficial. Zonta, Shorter men births when you look at the major Italian urban centers, Human Reproduction, Regularity 14, Issue twelve, step one December 1999, Users 3116–3119,
Abstract
The brand new downwards pattern from the sex proportion during the delivery that has took place multiple places in the last three decades is postulated so you're able to rule a degeneration for the environmental requirements, for example unfavourable getting male conception and you can fetus endurance. For the Italy, in contrast, an ascending trend might have been noticed. Provided that exposure to reproductive hazards happen mostly on significant metropolises,...