RT Journal Article SR Electronic T1 Osler on the Nile JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 833 OP 833 DO 10.1503/cmaj.1031329 VO 170 IS 5 A1 A. Mark Clarfield YR 2004 UL http://www.cmaj.ca/content/170/5/833.abstract