GUEST EDITOR RAHMAN POURMAND, MD, Associate Professor, Department of Neurology, Indiana

University School of Medicine, Indianapolis, Indiana

CONTRIBUTORS ANTHONY A. AMATO, MD, Chief of the Neuromuscular Division, Department of

Neurology, Brigham and Women's Hospital; and Associate Professor, Department of Neurology, Harvard Medical School, Boston, Massachussetts

ZOHAR ARGOV, MD, Associate Professor, Department of Neurology, Hadassah University Hospital, Jerusalem

DOUGLAS L. ARNOLD, MD, Professor and Director, Magnetic Resonance Spectroscopy Unit, Montreal Neurological Institute, McGill University, Montreal, Canada

VALERIE A. CWIK, MD, Assistant Professor, Department of Neurology, The University of Arizona Health Sciences Center, Tucson, Arizona

WILLIAM S. DAVID, MD, PhD, Assistant Professor, Department of Neurology, University of Minnesota Medical School, Minneapolis; and Associate Physician, Department of Neurology, and Director, EMG Laboratory, Hennepin County Medical Center, Minneapolis, Minnesota

SALVATORE DiMAURO, MD, Lucy G. Moses Professor, Department of Neurology, Columbia University College of Physicians and Surgeons, New York, New York

MARK 0. FARBER, MD, Professor, Division of Pulmonary, Occupational, and Critical Care Medicine, Department of Medicine, Indiana University School of Medicine, Indianapolis; and Staff Physician, Pulmonary Division, Roudebush Veteran's Affairs Medical Center, Indianapolis, Indiana

LAURIE GUTMANN, MD, Associate Professor, Department of Neurology, West Virginia University School of Medicine, Morgantown, West Virginia

HOLLI A. HORAK, MD, Neurophysiology Fellow, Department of Neurology, Indiana University School of Medicine, Indianapolis, Indiana

EDWARD T. MANNIX, PhD, Associate Scientist, Division of Pulmonary, Occupational, and Critical Care Medicine, Department of Medicine, and the AIDS Clinical Trials Group, Indiana University School of. Medicine, Indianapolis; and Associate Director of Research, The National Institute for Fitness and Sport, Indianapolis, Indiana

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P. M. MATTHEWS, MD, Dphil, Professor, Department of Clinical Neurology, University of Oxford, Radcliffe Infirmary, Oxford, United Kingdom

IKUYA NONAKA, MD, Director, Department of Ultrastructural Research, National Institute of Neuroscience, Neurology and Psychiatry, Tokyo, Japan

RAHMAN POURMAND, MD, Associate Professor, Department of Neurology, Indiana University School of Medicine, Indianapolis, Indiana

H. REDDY, MD, Rhodes Scholar, Department of Clinical Neurology, University of Oxford, Radcliffe Infirmary, Oxford, United Kingdom

RICHARD L. SABINA, PhD, Associate Professor, Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin

JOHN M. SCHOFFNER, MD, Director, Molecular Medicine Laboratory, Children’s Healthcare of Atlanta, Atlanta, Georgia

TANJA TAIVASSALO, MSc, Research Assistant, Institute of Exercise and Environmental Medicine, Dallas, Texas

SEIICHI TSUJINO, MD, Section Chief, Department of Inherited Metabolic Disease, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan

GEORGIRENE D. VLADUTIU, PhD, Associate Professor, Departments of Pediatrics, Neurology, and Pathology, Division of Genetics, School of Medicine and Biomedical Studies, State University of New York at Buffalo, Buffalo; and Director, the Robert Guthrie Biochemical Genetics Laboratory, Children’s Hospital of Buffalo, Buffalo, New York

iv CONTRIBUTORS