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Berger M, Schack JA.Berger M, et al. Among authors: schack ja.Adv Cardiol. 1977;19:218-9. doi: 10.1159/000399668.Adv Cardiol. 1977.PMID: 835413No abstract available.
TANNENBAUM O, VESELL H, SCHACK JA.TANNENBAUM O, et al. Among authors: schack ja.Am Heart J. 1963 Mar;65:349-56. doi: 10.1016/0002-8703(63)90009-7.Am Heart J. 1963.PMID: 13984881No abstract available.