Oral ingestion versus endoscopic delivery of endoscopic capsule in patients with previous gastrointestinal surgery (ORENCES study): A Spanish multicentre observational study Antonio Giordano; Alfonso Elosua González; Francisco Sánchez Ceballos; Cristina Carretero-Ribón; Marta Aicart-Ramos; Juan Egea Valenzuela; Noelia Alonso-Lázaro; José Luis Martín-Lorente; Consuelo Gálvez-Castillo; Vicente Pons-Beltrán; Ignacio Fernández-Urién; Begoña González-Suárez;