E. Wayne Massey - Division of Neurology, Duke University Medical Center, Durham, NC 27710
N. R. Dennis - Southampton General Hospital
Sarah Bundey - Department of Clinical Genetics, Birmingham Maternity Hospital, Birmingham B15 2TG, England
W. G. Bradley - Tufts Medical Center
J. Kelemen - Division of Neurology, Nassau County Medical Center, East Meadow, NY 11554
Shin'ichi Shoji - Department of Medicine, Shinshu University School of Medicine, Matsumoto 390, Japan