ANATOMICAL AND FUNCTIONAL ASSESSMENT OF PATENCY OF THE UPPER RESPIRATORY TRACT IN SELECTED RESPIRATORY DISORDERS - Part 1. - Kukwa, Andrzej; Zając, Andrzej; Barański, Robert; Nitkiewicz, Szymon; Kukwa, Wojciech; Zomkowska, Edyta; Rybak, Adam (Metrology & Measurement Systems, 2021)