Ahmed, N. A.; Yehia, A. M.; Mohamed, A. H.; Abdulwahhab, A. Attenuation of the Airway and Cardiovascular Responses to Extubation in Chronic Smokers by Prior Treatment With Dexmedetomidine, Fentanyl, and Their Combination. Open Access Maced J Med Sci 2021, 9, 1290-1295.