1Lamp B, Hammel D, Kerber S, et al. Muitisite pacing in severe heart failure-how many paitients are eligible?PACE, 1998,21:973.
2Linde C, Gadler F, Edner M, et al. Result of atrioventricular synchronous pacing with optimized delay in patients with severe congestive heart failure. Am J Cardiol, 1995,75:919.