Oliwia Sójkowska-Sławińska; Tobiasz Sławiński; Anna Leśniewska; Patryk Macuk; Natalia Rutecka. POLYSOMNOGRAPHY VERSUS PORTABLE DEVICES AND MOBILE APPLICATIONS IN THE DIAGNOSIS OF OBSTRUCTIVE SLEEP APNEA: A NARRATIVE REVIEW OF CURRENT EVIDENCE. IJITSS 2025, 3.