RT Journal Article SR Electronic T1 Challenges of prescribing low-dose drug therapy for older people JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1029 OP 1031 VO 160 IS 7 A1 P. A. Rochon A1 J. P. Clark A1 J. H. Gurwitz YR 1999 UL http://www.cmaj.ca/content/160/7/1029.abstract AB