Onal, O., Gumus, I., Ozdemirkan, A., Cicekci, F., Sarı, M., Bayram, H. H., . . . Celik, J. B. (2019). A comparative randomized trial of intubation success in difficult intubation cases: The use of a Frova intubation catheter versus a Bonfils intubation fiberoscope. Wideochir Inne Tech Maloinwazyjne.

Onal, Ozkan, Irem Gumus, Aysun Ozdemirkan, Faruk Cicekci, Mehmet Sarı, Hasan Huseyin Bayram, Cansu Ciftci, Emine Aslanlar, and Jale Bengi Celik. "A Comparative Randomized Trial of Intubation Success in Difficult Intubation Cases: The Use of a Frova Intubation Catheter Versus a Bonfils Intubation Fiberoscope." Wideochir Inne Tech Maloinwazyjne 2019.

Onal, Ozkan, et al. "A Comparative Randomized Trial of Intubation Success in Difficult Intubation Cases: The Use of a Frova Intubation Catheter Versus a Bonfils Intubation Fiberoscope." Wideochir Inne Tech Maloinwazyjne 2019.