Fetal Circulation
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=hwXm9jGcoAg
https://usmleqa.com/ • http://usmlefasttrack.com/?p=352 • umbilical vein, umbilical arteris, ductus venosus, foramen ovale, ductus arteriosus, indomethacin, prostaglandins, PDA, First Aid, for, USMLE, Step 1, wiki, define, wikipedia,
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