Disclosures R.J. Thomas discloses the following: Patents and license (to MyCardio, LLC) for ECG/PPG spectrogram for sleep quality and sleep apnea diagnosis and endotype; submitted patent for (1) respiratory self-similarity for detection of high-loop-gain sleep apnea; (2) Enhanced Expiratory Rebreathing Space (EERS) for treatment of high-loop-gain sleep apnea. Patent for auto-CPAP algorithm (DeVilbiss-drive); unlicensed patent: Positive Airway Pressure Gas Modulator (PAPGAM) for central/complex apnea; general sleep medicine consulting: Guidepoint; GLG Councils; Jazz Pharmaceuticals; funding: (1) Institute for Persnalized Sleep Health, Beth Israel Deaconess Medica Center; (2) NIH1RF1NS120947-01 and 1R01HL161253-01A1. M. Kryger discloses the following: Scientific advisor: Bodimetrics, Wesper; funding: none to disclose.