RT Journal Article SR Electronic T1 Staffing levels for long-term care JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 467 OP 468 DO 10.1503/cmaj.1050089 VO 173 IS 5 A1 Ed Helfrich YR 2005 UL http://www.cmaj.ca/content/173/5/467.2.abstract