William S. David, MD, PhD, FAAN, and David A. Chad, MD, FAAN

The Guest Editors of this issue of Seminars in Neurology are Drs. William “Bill” David and David Chad from Massachusetts General Hospital in Boston.

Dr. David is an Associate Professor of Neurology at Harvard Medical School in Cambridge, Massachusetts. He received his MD and PhD from Albert Einstein College of Medicine in New York, and currently serves at Massachusetts General Hospital as the Director of the EMG Laboratory and Neuromuscular Diagnostic Center, as well as the Associate Program Director for the Harvard Partners Neuromuscular Medicine Fellowship Program. His research and clinical activities have focused on neurophysiology and neuromuscular disorders—amyotrophic lateral sclerosis (ALS) in particular. As Director of the Neuromuscular Diagnostic Center, he oversees the EMG laboratory, neuromuscular clinics, infusion suite, and the autonomic laboratory.

Dr. Chad is an Associate Professor of Neurology at Harvard Medical School as well. He earned his MD from McGill University in Montreal, Canada, did his first residency in Internal Medicine at Montreal General Hospital, and a second residency in Neurology at the University of California at San Francisco (UCSF), then a fellowship in Neuromuscular Diseases at Tufts University Medical Center in Medford, Massachusetts. He was on the faculty of the University of Massachusetts Medical School in Worchester for 26 years before joining the Neuromuscular Unit at Massachusetts General Hospital in 2008. He is a gifted educator and clinical expert with particular expertise in ALS, peripheral neuropathy, myasthenia gravis, myopathies, and muscular dystrophies.

I had the personal great fortune of working with both Bill and David when we overlapped at Massachusetts General Hospital, and vividly recall their excellence in clinical care and education. We greatly appreciate their efforts, as well as that of the contributing authors for their great work in this issue of Seminars. The issue provides the reader with an outstanding update on the multiple facets of neuromuscular disease, with useful information about clinical care as well as the exciting research that is being done in the field. We hope this issue helps to improve your knowledge of neuromuscular disorders, with practical advice for the treatment of today's patients and exciting insights into their future care.