The association of sex of co-twin and birth size in twins born in Yucatan, Mexico between 2008 and 2017.

Conclusions: Males from M-F pairs show greater birth size than males from same-sex pairs, which supports the hypothesis that birth measures of twins are influenced by sex of the co-twin. PMID: 32321309 [PubMed - as supplied by publisher]
Source: Annals of Human Biology - Category: Biology Tags: Ann Hum Biol Source Type: research