About 3% of live births in the U.S. result in twins. Fertility treatments, age, and family history can influence the chances of having twins. Twin pregnancies carry higher risks but receive extra ...
PROVIDENCE, R.I. [Brown University] -- The twin birth rate in the U.S. has surged over the last 30 years, mostly because of reproductive technologies including in vitro fertilization. Though it's ...
The twin birth rate in the U.S. has surged over the last 30 years, mostly because of reproductive technologies including in vitro fertilization. Though it's partly the cause, IVF could also be the ...
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