RT Journal Article SR Electronic T1 Drug-related problems in the frail elderly JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 168 OP 169 VO 57 IS 2 A1 Barbara Farrell A1 WaiSum Szeto A1 Salima Shamji YR 2011 UL http://www.cfp.ca/content/57/2/168.abstract AB