Corojan Loor, A., S. Nedelecuț, and D. Dumitrașcu. “High Prevalence of Gastroesophageal Reflux in Vocal Opera Students. A Case-Control Type Study”. Medicine and Pharmacy Reports, Vol. 93, no. 2, Jan. 2020, pp. 145-9, doi:10.15386/mpr-1370.