RT Journal Article SR Electronic T1 Substitute decision making and code status at end of life JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 743 OP 745 DO 10.46747/cfp.6810743 VO 68 IS 10 A1 Siemens, Isaac YR 2022 UL http://www.cfp.ca/content/68/10/743.abstract AB