P456Variability of premature atrial contraction count and presence of nonsustained atrial tachycardias. (20th June 2017) - Lam, A.; Goulouti, E.; Haeberlin, A.; Sweda, R.; Medeiros-Domingo, A.; Seiler, J.; Baldinger, S.; Noti, F.; Servatius, H.; Fuhrer, J.; Tanner, H.; Roten, L.