Modir H, Mahmoodiyeh B, Kamali A, Barsari FZ, Ranjbar S.
Efficacy of gargling with Licorice extract, Ketamine, and Magnesium Sulfate before Laryngoscopy: Tracheal Intubation in Prevention of Sore Throat, Hoarseness, and Cough; a Randomized Clinical Trial. 
Indian J Respir Care
2023;
12
(1):62-66.