They say good things come in pairs, and that’s increasingly true for American babies, new government data show.
The U.S. twinning rate hit a record last year, with 33.9 out of every 1,000 births involving twins. That increase from the 2013 rate of 33.7 per 1,000 births isn’t big enough to be statistically...
from L.A. Times - Science http://Births, twins, U.S., CDC
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