RT Journal Article SR Electronic T1 Breast self-examination JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 164 OP 164 VO 166 IS 2 A1 Tammy J. Clifford A1 Margaret Sampson A1 Howard M. Schachter YR 2002 UL http://www.cmaj.ca/content/166/2/164.1.abstract