Chief;
Division of Geriatrics;
Director;
Geriatric Medicine Fellowship Program Our Lady of Mercy University Medical Center;
600 E 233~(rd)Street;
Bronx;
NY 10466;
Resident;
Internal Medicine Our Lady of Mercy Medical Center;
Chief Medical Resident;
Internal Medicine Our Lady of Mercy Medical Center;
vitamin; B12; deficiency/therapy; anemia; sickle; cell; gastric; mucosa; biopsy; pernicious; toxicity;