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• QT interval variability index and QT interval duration in different sleep stages : analysis of polysomnographic recordings in nonapneic male patientsViigimäe, Moonika; Karai, Deniss; Pirn, Peeter; Pilt, Kristjan; Meigas, Kalju; Kaik, JüriBioMed Research International2015 / art. 963028 https://doi.org/10.1155/2015/963028 https://www.scopus.com/sourceid/21100230018 https://www.scopus.com/record/display.uri?eid=2-s2.0-84950112984&origin=inward&txGid=e57af372be46aef1f3aeccb84eb3e8bf https://jcr.clarivate.com/jcr-jp/journal-profile?journal=BIOMED%20RES%20INT&year=2015 https://www.webofscience.com/wos/woscc/full-record/WOS:000366533600001