Babies may be U.S. 's second set of live-born octuplets , California hospital says . Three of the babies need breathing assistance , but otherwise the eight do n't appear to have serious problems , doctors said at a news conference Monday evening . ` Doctors expected seven babies , did n't know of eighth until delivery . Comment: Three require breathing assistance ; next seven days 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 eighth until delivery . Comment: Three require breathing assistance ; next seven days will be critical , doctor says .