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Marzoll U, Kleiman NS, Dunn JK, Verani MS, Minor ST, Roberts R, Raizner AE.Marzoll U, et al. Among authors: roberts r.J Am Coll Cardiol. 1991 Mar 1;17(3):613-20. doi: 10.1016/s0735-1097(10)80173-1.J Am Coll Cardiol. 1991.PMID: 1993777Free article.
Verani MS, Roberts R.Verani MS, et al. Among authors: roberts r.J Am Coll Cardiol. 1987 Aug;10(2):470-6. doi: 10.1016/s0735-1097(87)80035-9.J Am Coll Cardiol. 1987.PMID: 2955027Free article.Review.No abstract available.