Randomized controlled trials on the comparative effect of treatment modalities of central sleep apnea with Cheyne–Stokes Respiration on cardiovascular outcomes and physiology studies required Randomized controlled trials on the comparative effect of treatment modalities of central sleep apnea with Cheyne–Stokes Respiration on cardiovascular outcomes and physiology studies required Download Pulmonary hypertension and obstructive sleep apnea Sleep telemedicine training in fellowship programs: a survey of program directors