title: A narrow QRS gallop rhythm.
authors: Department of cardiology and cardiac surgery, Onze Lieve Vrouwe Gasthuis, Oosterpark 9, 1091, AC Amsterdam, The Netherlands, d.mol@olvg.nl.
authors: Daniel
authors: D
authors: Mol
authors: Andrew
authors: A
authors: Tjon Joek Tjien
authors: Jonas S S G
authors: JS
authors: de Jong