1)Haïssaguerre M, et al:Spontaneous initiation of atrial fibrillation by ectopic beats originating in the pulmonary veins. N Engl J Med 339:659-666, 1998
2)Yamane T, et al:Morphological characteristics of P waves during selective pulmonary vein pacing. J Am Coll Cardiol 38:1505-1510, 2001
3)Shah DC, et al:High-resolution mapping of tachycardia originating from the superior vena cava;Evidence of electrical heterogeneity, slow conduction, and possible circus movement reentry. J Cardiovasc Electrophysiol 13:388-392, 2002
4)Brooks AG, et al:Characteristics of ectopic triggers associated with paroxysmal and persistent atrial fibrillation;Evidence for a changing role. Heart Rhythm 9:1367-1374, 2012
5)Binici Z, et al:Excessive supraventricular ectopic activity and increased risk of atrial fibrillation and stroke. Circulation 121:1904-1911, 2010
score to predict first-time appearance of atrial fibrillation. Am J Cardiol 111:1602-1607, 2013