Simultaneous two-level esophageal 24-hour pH monitoring in patients with mild and severe esophagitis - Does probe position influence results of esophageal monitoring?

1. Ruiz-De-León, A.
2. Sevilla-Mantilla, C.
3. Pérez-de-la-Serna, J.
4. Taxonera, C.
5. Rubio, M.D.