A Polysomnographic Placebo-Controlled Evaluation of the Efficacy and Safety of Eszopiclone Relative to Placebo and Zolpidem in the Treatment of Primary Insomnia A Polysomnographic Placebo-Controlled Evaluation of the Efficacy and Safety of Eszopiclone Relative to Placebo and Zolpidem in the Treatment of Primary Insomnia Download A Patient with Obstructive Sleep Apnea Undergoing Bariatric Surgery Atrioventricular Block During the Phasic Events of REM Sleep in a Patient with Severe Obstructive Sleep Apnea Syndrome