M. A. Aranda Wildberger, C. Petry Bottini, and C. A. Wildberger de Aranda, “Morbidity and mortality of patients undergoing bariatric surgery at the Hospital Nacional Itauguá: experience years 2017 to 2021”, Rev. Nac. (Itauguá), vol. 14, no. 2, pp. 018–029, Dec. 2022.