Karakurt, S. E., K. M. Ozcan, M. Ozcan, M. F. Karakus, S. Ensari, and H. H. Dere. “Factors Associated With the Required Level of Positive Airway Pressure in Patients With Obstructive Sleep Apnea Syndrome”. Annals of Medical Research, vol. 28, no. 7, July 2021, pp. 1284-8, http://www.annalsmedres.org/index.php/aomr/article/view/3833.