RT Journal Article SR Electronic T1 Should patients receiving long-term gastric acid inhibition therapy be evaluated for vitamin B12 deficiency? JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 785 OP 787 VO 67 IS 11 A1 Richter, Joel E. YR 2000 UL http://www.ccjm.org/content/67/11/785.abstract AB