Sakalauskaitė, Greta, Evaldas Kauzonas, Greta Bukelytė, Rūta Janulevičienė, and Eglė Kontrimavičiūtė. 2019. “Comparison of Preoxygenation Efficiency With Intersurgical Economy and Intersurgical QuadraLite Anaesthetic Face Masks”. Acta Medica Lituanica 26 (1): 11-16. https://doi.org/10.6001/actamedica.v26i1.3950.