Celiac Sprue & Refractory Sprue
Gastroenter. 75:3071978., Trier,J.S.,et al, 1978
Diseases of the Nervous System Caused by Nutritional Deficiency, Pellagra (Niacin, Nicotinic Acid, B3 Deficiency)
Adams & Victors Principles of Neurology Chp 41, pg 1170, Ropper, A.H.,et al, 2014