P457Variability of premature ventricular contractions and presence of nonsustained ventricular tachycardias. (20th June 2017) - Goulouti, E.; Lam, A.; Haeberlin, A.; Sweda, R.; Medeiros-Domingo, A.; Noti, F.; Seiler, J.; Baldinger, S.; Servatius, H.; Fuhrer, J.; Tanner, H.; Roten, L.