RT Journal Article SR Electronic T1 Why screening for depression in primary care is impractical JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP cmaj.130634 DO 10.1503/cmaj.130634 A1 Roger C. Bland A1 David L. Streiner YR 2013 UL http://www.cmaj.ca/content/early/2013/05/13/cmaj.130634.abstract AB