TY - JOUR
T1 - Factors influencing twins and zygosity
AU - Hankins, Gary V.D.
AU - Saade, George R.
PY - 2005/1
Y1 - 2005/1
N2 - 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.
AB - 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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UR - http://www.scopus.com/inward/citedby.url?scp=13844310326&partnerID=8YFLogxK
U2 - 10.1111/j.1365-3016.2005.00609.x
DO - 10.1111/j.1365-3016.2005.00609.x
M3 - Article
C2 - 15670115
AN - SCOPUS:13844310326
SN - 0269-5022
VL - 19
SP - 8
EP - 9
JO - Paediatric and Perinatal Epidemiology
JF - Paediatric and Perinatal Epidemiology
IS - SUPPL. 1
ER -