1. D. Tshala Katumbay, M.D., and V. Mutombo Lukusa, M.D., are from the Départment de Neurologie, Centre Neuropsychopathologique du Mont-Amba, Université de Kinshasa, République Démocratique du Congo; K. Edebol Eeg-Olofsson, M.D., Ph.D., and Dr. Katumbay are from the Department of Neuroscience, Section for Clinical Neurophysiology, University Hospital, Uppsala, Sweden