RT Journal Article SR Electronic T1 Enhanced weekend service: an affordable means to increased hospital procedure volume JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 503 OP 504 DO 10.1503/cmaj.1041063 VO 172 IS 4 A1 Chaim M. Bell A1 Donald A. Redelmeier YR 2005 UL http://www.cmaj.ca/content/172/4/503.abstract