Fig. 1From: Mask side-effects in long-term CPAP-patients impact adherence and sleepiness: the InterfaceVent real-life studyStudy flow chart. CPAP: Continuous Positive Airway Pressure. *Multiple masks or mask-types not included (multiple mask-types for 66 patients, Liberty® mask for two patients, Oracle® oral mask for 3 patients)Back to article page