Pre-procedural proton pump inhibition is associated with fewer peri-oesophageal lesions after cryoballoon pulmonary vein isolation oleh F. Cordes, C. Ellermann, D. G. Dechering, G. Frommeyer, S. Kochhäuser, P. S. Lange, C. Pott, F. Lenze, I. Kabar, H. Schmidt, H. Ullerich, L. Eckardt