Clinical Reasoning: A 49-year-old man with Progressive Numbness, Weakness, and Evidence of Leptomeningeal Enhancement
Neurol 90:e90-e93, Lovett, A.,et al, 2018
Clinicalpathologic Conference, Vitamin B12 Deficiency due to Pernicious Anemia
NEJM 366:1626-1633, Case 13-2012, 2012