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Colavita PG, Ideker RE, Reimer KA, Hackel DB, Stack RS.Colavita PG, et al. Among authors: hackel db.J Am Coll Cardiol. 1986 Oct;8(4):855-60. doi: 10.1016/s0735-1097(86)80427-2.J Am Coll Cardiol. 1986.PMID: 2944937Free article.
Savage RM, Wagner GS, Ideker RE, Podolsky SA, Hackel DB.Savage RM, et al. Among authors: hackel db.Circulation. 1977 Feb;55(2):279-85. doi: 10.1161/01.cir.55.2.279.Circulation. 1977.PMID: 832343