RT Journal Article SR Electronic T1 Case report: Recurrent aphthous stomatitis responds to vitamin B12 treatment. JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 844 OP 845 VO 51 IS 6 A1 Volkov, Ilia A1 Rudoy, Inna A1 Abu-Rabia, Unes A1 Masalha, Tawfek A1 Masalha, Rafik YR 2005 UL http://www.cfp.ca/content/51/6/844.abstract AB