Comparing the Efficacy of “Spray as You Go” Technique Versus Combined Airway Nerve Block and “Spray as You Go” as Topical Anesthesia During Flexible Bronchoscopy; a Double-Blinded Randomized Clinical Trial - Rafiei, Effat; Paknejad, Omalbanin; Eftekhar, Negar; Salehi, Oveis; Rashidi, Parisa; Gholamzadeh, Marsa; Asadi Gharabaghi, Mehrnaz (Acta Medica Iranica, 2024)