Downbeat Nystagmus
Arch Neurol 40:754-755, Coppeto,J.R.,et al, 1983
Non-Migranous Headaches, Classification and Management
BMJ 299:70-72, Clouch,C., 1989
Downbeating Nystagmus and Other Ocular Motor Defects Caused by Lithium Toxicity
Neurol 39:481-487, Corbett,J.J.,et al, 1989