vitamin B12; deficiency, neuropathic, with anemia (pernicious) (etiology)
vitamin b12; deficiency, neuropathic, with anemia (pernicious) (etiology)
vitamin B12; deficiency, neuropathic, with anemia (pernicious) (etiology)
vitamin b12; deficiency, neuropathic, with anemia (pernicious) (etiology)