Meir H. Kryger, MD, is a physician and professor at the Yale School of Medicine and editor of Principles and Practice of Sleep Medicine, 6th Edition (Elsevier, 2016); Kryger’s Sleep Medicine Review (Elsevier, 2015); and Atlas of Clinical Sleep Medicine (Elsevier, 2014). His latest eBook is The iGuide to Sleep (2012). A renowned researcher and practitioner, Dr. Kryger’s research has spanned all areas of sleep breathing disorder s. He has published more than 200 research articles and book chapters. He established the first laboratory to study patients with sleep breathing problems in Canada, and was the first to diagnose and report obstructive sleep apnea in North America. Dr. Kryger has served as Chairman of the Board of the National Sleep Foundation and is a former president of the American Academy of Sleep Medicine and former president of the Canadian Sleep Society.