RT Journal Article SR Electronic T1 Is planned cesarean childbirth a safe alternative? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 475 OP 476 DO 10.1503/cmaj.061724 VO 176 IS 4 A1 B. Anthony Armson YR 2007 UL http://www.cmaj.ca/content/176/4/475.abstract