Literature DB >> 15670115

Factors influencing twins and zygosity.

Gary V D Hankins1, George R Saade.   

Abstract

Zygosity is influenced by many factors. Monozygotic twins occur spontaneously in approximately 1 in 250 births and are felt to increase twofold with ovulation induction techniques. Monozygotic twinning also increases in proportion to the number of blastocysts transferred during in vitro fertilisation. In contrast, dizygotic twinning appears to be influenced by race, genetic factors, maternal age, fertility enhancing drugs, folic acid supplementation, and maternal nutritional status.

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Year:  2005        PMID： 15670115     DOI： 10.1111/j.1365-3016.2005.00609.x

Source DB:  PubMed          Journal:  Paediatr Perinat Epidemiol        ISSN： 0269-5022            Impact factor:   3.980


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  6 in total

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