Piza-Palacios L, Cárdenas-Oña M, Vásquez-Ojeda X, Alurralde C, Rosas E, Samalvides-Cuba F, Espinoza-Ríos J. Frequency of functional esophageal disorders in patients with refractory reflux symptoms in Lima, Peru. Rev Gastroenterol Peru [nternet]. 2023 Sep. 30 [cited 2026 Nov. 12];43(3):242-50. vailable from: https://revistagastroperu.com/index.php/rgp/article/view/1498