Oliwia Sójkowska-Sławińska, Tobiasz Sławiński, Anna Leśniewska, Patryk Macuk and Natalia Rutecka 2025. POLYSOMNOGRAPHY VERSUS PORTABLE DEVICES AND MOBILE APPLICATIONS IN THE DIAGNOSIS OF OBSTRUCTIVE SLEEP APNEA: A NARRATIVE REVIEW OF CURRENT EVIDENCE. International Journal of Innovative Technologies in Social Science. 3, 3(47) (Sep. 2025). DOI:https://doi.org/10.31435/ijitss.3(47).2025.3861.