Retraction Letter for Neligan P, Malhotra G, Fraser MW, Williams N, Greenblatt EP, Cereda M, Ochroch EA. Noninvasive Ventilation Immediately After Extubation Improves Lung Function in Morbidly Obese Patients with Obstructive Sleep Apnea Undergoing Laparoscopic Bariatric Surgery. (Retraction of Anesthesia & Analgesia 2010;110:1360-5)