Văn Bé Hai, Nguyễn, et al. “OROPHARYNX PAIN, DISCOMFORT, AND ECONOMIC IMPACT OF TRANSESOPHAGEAL ECHOCARDIOGRAPHY IN PATIENTS WITH ATRIAL FIBRILLATION”. Journal of Health and Aging, vol. 1, no. 4, Oct. 2025, pp. 45-52, https://doi.org/10.63947/bvtn.v1i4.7.