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Kragel AH, Roberts WC.Kragel AH, et al. Among authors: roberts wc.Am J Cardiol. 1988 Oct 1;62(10 Pt 1):771-7. doi: 10.1016/0002-9149(88)91220-9.Am J Cardiol. 1988.PMID: 3421178
Kragel AH, Gertz SD, Roberts WC.Kragel AH, et al. Among authors: roberts wc.J Am Coll Cardiol. 1991 Sep;18(3):801-8. doi: 10.1016/0735-1097(91)90805-j.J Am Coll Cardiol. 1991.PMID: 1869744Free article.
Roberts WC, Kragel AH, Gertz SD, Roberts CS, Kalan JM.Roberts WC, et al. Among authors: roberts cs.Am J Cardiol. 1991 Sep 3;68(7):22B-27B. doi: 10.1016/0002-9149(91)90381-t.Am J Cardiol. 1991.PMID: 1892064Review.
Dollar AL, Kragel AH, Fernicola DJ, Waclawiw MA, Roberts WC.Dollar AL, et al. Among authors: roberts wc.Am J Cardiol. 1991 Jun 1;67(15):1223-7. doi: 10.1016/0002-9149(91)90931-a.Am J Cardiol. 1991.PMID: 2035445
Gertz SD, Malekzadeh S, Dollar AL, Kragel AH, Roberts WC.Gertz SD, et al. Among authors: roberts wc.Am J Cardiol. 1991 Jun 1;67(15):1228-33. doi: 10.1016/0002-9149(91)90932-b.Am J Cardiol. 1991.PMID: 2035446
Gertz SD, Kragel AH, Kalan JM, Braunwald E, Roberts WC.Gertz SD, et al. Among authors: roberts wc.Am J Cardiol. 1990 Oct 15;66(12):904-9. doi: 10.1016/0002-9149(90)90923-o.Am J Cardiol. 1990.PMID: 2121015