Nasal Continuous Positive Airway Pressure Improves Quality of Life in Obesity Hypoventilation Syndrome - Hida, Wataru; Okabe, Shinichi; Tatsumi, Koichiro; Kimura, Hiroshi; Akasiba, Tsuneto; Chin, Kazuo; Ohi, Motoharu; Nakayama, Hideaki; Satoh, Makoto; Kuriyama, Takayuki (Sleep and Breathing, 2003)