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Schnittger I, Gordon EP, Fitzgerald PJ, Popp RL.Schnittger I, et al. Among authors: popp rl.J Am Coll Cardiol. 1983 Nov;2(5):934-8. doi: 10.1016/s0735-1097(83)80242-3.J Am Coll Cardiol. 1983.PMID: 6630768Free article.
Gordon EP, Schnittger I, Fitzgerald PJ, Williams P, Popp RL.Gordon EP, et al. Among authors: popp rl.J Am Coll Cardiol. 1983 Sep;2(3):506-13. doi: 10.1016/s0735-1097(83)80278-2.J Am Coll Cardiol. 1983.PMID: 6875114Free article.
Kantrowitz NE, Schnittger I, Schwarzkopf A, Fitzgerald PJ, Popp RL.Kantrowitz NE, et al. Among authors: popp rl.Am Heart J. 1983 Sep;106(3):521-7. doi: 10.1016/0002-8703(83)90696-8.Am Heart J. 1983.PMID: 6881026
Schnittger I, Bowden RE, Abrams J, Popp RL.Schnittger I, et al. Among authors: popp rl.Am J Cardiol. 1978 Sep;42(3):388-95. doi: 10.1016/0002-9149(78)90933-5.Am J Cardiol. 1978.PMID: 685851
Schnittger I, Popp RL.Schnittger I, et al. Among authors: popp rl.Mayo Clin Proc. 1988 Jul;63(7):726-8. doi: 10.1016/s0025-6196(12)65535-9.Mayo Clin Proc. 1988.PMID: 3386312No abstract available.
Schnittger I, Fitzgerald PJ, Gordon EP, Alderman EL, Popp RL.Schnittger I, et al. Among authors: popp rl.Circulation. 1984 Aug;70(2):242-54. doi: 10.1161/01.cir.70.2.242.Circulation. 1984.PMID: 6733880