Seasonal inconstancy of human sex ratio at birth

A large body of literature describes relationships between the sex ratio at birth and modifying factors. The relationships that display seasonal fluctuations are hypothesized to reflect causal impact of periconceptional and later intrauterine effects. This short review summarizes the results of studies that investigated internal and external influences on the seasonal pattern of human sex ratio at birth.
Source: Early Human Development - Category: Perinatology & Neonatology Authors: Tags: Best practice guidelines Source Type: research