Clarós, Pedro, Kinga Mikolajczyk, Astrid Clarós Pujol, Carmen Pujol, Juan Sabater, and Andrés Clarós. “Side Effects of Medications in Professional Opera singers’ Voice: Survey Findings”. International Journal of Otorhinolaryngology and Head and Neck Surgery 6, no. 2 (January 24, 2020): 213–223. Accessed November 16, 2025. https://www.ijorl.com/index.php/ijorl/article/view/1704.