Randomized controlled trial of variable-pressure versus fixed-pressure continuous positive airway pressure (CPAP) treatment for patients with obstructive sleep apnea/hypopnea syndrome (OSAHS) Vennelle, M.; White, S.; Riha, R.L.; Mackay, T.W.; Engleman, H.M.; Douglas, N.J. Sleep 33(2): 267-271 2010 0161-8105 10.1093/sleep/33.2.267 https://eurekamag.com/research/055/358/055358057.php