RT Journal Article SR Electronic T1 Oral vitamin B12: a cost-effective alternative JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 111 OP 112 VO 60 IS 2 A1 Michael R. Kolber A1 Sherilyn K.D. Houle YR 2014 UL http://www.cfp.ca/content/60/2/111.abstract AB