Babies may be U.S. 's second set of live-born octuplets , California hospital says . Doctors expected seven babies , did n't know of second until delivery . ( CNN ) -- Octuplets delivered by Caesarean section next seven days Monday evening . Three require breathing assistance ; Monday will be critical , doctor says .
Babies may be U.S. 's second set of live-born octuplets , California hospital says . Doctors expected seven babies , did n't know of second until delivery . Octuplets delivered by Caesarean section next seven days Monday evening . Three require breathing assistance ; Monday will be critical , doctor says .