Impact of left atrial appendage closure in patients on anticoagulation for atrial fibrillation and recurrent or chronic gastrointestinal bleeding Laura Gonzalez-Gonzalez; Anna Calm; Míriam Mañosa; Víctor Bazán; Andrea Borrellas; Xavier Carrillo; Felipe Bisbal; Nuria Vallejo; Fiorella Cañete; Margalida Calafat; Eugeni Domènech;