RT Journal Article SR Electronic T1 Reflections on the birth of conjoined twins JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1235 OP 1236 DO 10.1503/cmaj.1070127 VO 177 IS 10 A1 Manfred Gogol MD YR 2007 UL http://www.cmaj.ca/content/177/10/1235.4.abstract