[1] Univ Eastern Finland, Dept Tech Phys, Kuopio, Finland
[2] Kuopio Univ Hosp, Diagnost Imaging Ctr, Kuopio, Finland
[3] Gothenburg Univ, Sahlgrenska Acad, Ctr Sleep & Wake Disorders, Gothenburg, Sweden
[4] Univ Queensland, Sch Elect Engn & Comp Sci, Brisbane, Qld, Australia
[5] Kuopio Univ Hosp, Sci Serv Ctr, Kuopio, Finland
[6] Seinajoki Cent Hosp, Dept Clin Neurophysiol, Seinajoki, Finland
[7] Sahlgrens Univ Hosp, Sleep Disorders Ctr, Pulm Med, Gothenburg, Sweden
[8] Univ Eastern Finland, Inst Clin Med, Sch Med, Kuopio, Finland
[9] Reykjavik Univ, Dept Comp Sci, Reykjavik, Iceland
[10] Reykjavik Univ, Reykjavik Univ Sleep Inst, Reykjavik, Iceland
[11] Univ Oslo, Inst Clin Med, Oslo, Norway
[12] Akershus Univ Hosp, Dept Ear Nose & Throat Surg, Lorenskog, Norway
[13] Reykjavik Univ, Phys Act Phys Educ Sport & Hlth PAPESH Res Grp, Dept Sports Sci, Reykjavik, Iceland
[14] Nox Med Ehf, Reykjavik, Iceland
[15] Univ Coll Dublin, Sch Med, Dublin, Ireland
[16] St Vincents Hosp Grp, Dept Resp & Sleep Med, Dublin, Ireland
[17] Landspitali Natl Univ Hosp Iceland, Reykjavik, Iceland