Smith P N, Schumitsch P A, Seebandt M L, Bores C J, Weiler E T, Ray J F, Myers W O, Douglas-Jones J W, Vidaillet H J
Department of Cardiology, Marshfield Clinic, Wisconsin 54449-5777.
Am J Cardiol. 1991 Sep 1;68(6):679-81. doi: 10.1016/0002-9149(91)90366-s.