Antonina Broen , J. and Koperdowska, J. 2026. OBSTRUCTIVE SLEEP APNEA, SLEEP FRAGMENTATION AND CARDIOVASCULAR AUTONOMIC DYSFUNCTION: MECHANISMS AND CLINICAL IMPLICATIONS. International Journal of Innovative Technologies in Social Science. 1, 2(50) (May 2026). DOI:https://doi.org/10.31435/ijitss.2(50).2026.5527.