The Effects of 4-Aminopyridine in MS Pts:Randomized, Placebo-Controlled, Double-Blind, Concentration-Controlled, Crossover
Neurol 44:1054-1059, Bever,C.T.,et al, 1994
A Simple Procedure for General Screening for Functional Disability in Elderly Patients
Ann Int Med 112:699-706, Lachs,M.S.,et al, 1990