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10. [Systolic heart sounds. The differential diagnostic classification with "non-invasive" examination methods]. Alber G, Seidel F, Spangenberg G, Uberreiter A, Bender M, Kreul HG. Fortschr Med; 1981 Aug 13; 99(30):1168-71. PubMed ID: 7196870 [No Abstract] [Full Text] [Related]
11. [The amylnitrite test in the differential diagnosis of heart sounds in adults]. Richter G, Reinhardt M, Müller S. Med Klin; 1967 May 05; 62(18):706-10. PubMed ID: 5589247 [No Abstract] [Full Text] [Related]
12. Usefulness and limitations of precordial phonocardiography and external pulse recordings. Tavel ME, Stewart J. Cardiovasc Clin; 1975 May 05; 6(3):41-55. PubMed ID: 1100247 [Abstract] [Full Text] [Related]
13. [Degenerative heart defects in old age with special reference to the diagnosis of systolic murmur]. Sóvári M, Fazekas P, Halmos B, Bak G. Orv Hetil; 1975 Jan 12; 116(2):73-7. PubMed ID: 1109482 [No Abstract] [Full Text] [Related]