'Anesthesia Paresthetica':Nitrous Oxide-Induced Cobalamin Deficiency
Neurol 45:1608-1610, 14351995., Kinsella,L.J.&Green,R., 1995
A Synd of Methylmal Acid, Homocystinuria, Megaloblas. Anemia & Neurol Abnor. in a Vit B-12-def Breast-fed Infant of veget
NEJM 299:317, Higginbottom,M.C., 1978