Boltayev Elmurod Bekmurod ugli, and Sabirov Jo’raboy Marifbayevich. “ORGANIZATION OF OXYGEN THERAPY USING A NASAL MASK AND VENTURA MASK IN SEVERE PATIENTS WITH COVID-19 CORONA VIRUS INFECTION”. Emergent: Journal of Educational Discoveries and Lifelong Learning (EJEDL), vol. 2, no. 08, Aug. 2021, pp. 6-10, doi:10.17605/OSF.IO/N26VB.