Black mothers in the U.S. are particularly at risk, National Geographic reports. "Why giving birth in the U.S. is surprisingly deadly" is part of National Geographic’s special-edition, single-topic ...
3D simulation of the birth canal of chimpanzees with (B) the fetal head in a fully extended position, the typical head alignment in apes, and (C) the fetal head in a fully flexed position, the usual ...
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