Neurologic Aspects of Cobalamin Deficiency
Medicine 70:229-245, Healton,E.B.,et al, 1991
A Simple Procedure for General Screening for Functional Disability in Elderly Patients
Ann Int Med 112:699-706, Lachs,M.S.,et al, 1990
Demyelinating Diseases
In Rowlands Merritt's Textbk of Neurology, Lea & Febiger, Phila, 8th Ed, p. 749, Sibley,W.A.,et al, 1989