Atrial septum fat deposition and atrial anatomy assessed by cardiac magnetic resonance: relationship to atrial electrophysiology by Rizzi Patricia B, Mewton Nathan, Tereshchencko Larisa G, Strauss David G, Liu Chia-Ying, Verrier Richard L, Marchlinski Francis E, Cox Christopher, Nearing Bruce D, Spooner Peter M, Kellman Peter, Lima Joao A