1. School of Public Health, University of California, Berkeley, Berkeley, CA 94720, USA.
2. Propeller Health, 505 Montgomery St. #2300, San Francisco, CA 94111, USA.
3. School of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.
4. Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA 90095, USA.
5. ResMed, San Diego, CA 92123, USA.