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Anna71 [15]
3 years ago
12

In the united states, the rates of twins and triplets have significantly increased over the past two decades, mostly due to

History
1 answer:
Semenov [28]3 years ago
4 0
One reason for the increased twinning rates begin to be the increase in assistive reproductive technologies. Including fertility boosting medications, artificial insemination, vitro fertilization (IVF) is the most popular.
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