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Jenni R, Büchi M, Jakob M, Ritter M.Jenni R, et al. Among authors: ritter m.Cathet Cardiovasc Diagn. 1998 May;44(1):28-33. doi: 10.1002/(sici)1097-0304(199805)44:1<28::aid-ccd8>3.0.co;2-9.Cathet Cardiovasc Diagn. 1998.PMID: 9600519
Jenni R, Ritter M, Vieli A, Hirzel HO, Schmid ER, Grimm J, Turina M.Jenni R, et al. Among authors: ritter m.Br Heart J. 1989 Feb;61(2):167-71. doi: 10.1136/hrt.61.2.167.Br Heart J. 1989.PMID: 2923754Free PMC article.
Eichhorn P, Ritter M, Suetsch G, von Segesser LK, Turina M, Jenni R.Eichhorn P, et al. Among authors: ritter m.J Am Coll Cardiol. 1992 Nov 1;20(5):1175-9. doi: 10.1016/0735-1097(92)90375-w.J Am Coll Cardiol. 1992.PMID: 1401619Free article.
Jenni R, Ritter M, von Segesser L, Real F.Jenni R, et al. Among authors: ritter m.Eur Heart J. 1990 Feb;11(2):189-92. doi: 10.1093/oxfordjournals.eurheartj.a059679.Eur Heart J. 1990.PMID: 2311618Free article.
Ritter M, Rickli H, Jakob M, Amann FW, Jenni R.Ritter M, et al.J Am Soc Echocardiogr. 1995 Mar-Apr;8(2):215-6. doi: 10.1016/s0894-7317(05)80411-0.J Am Soc Echocardiogr. 1995.PMID: 7756007
Ritter M, von Segesser L, Jenni R.Ritter M, et al.Br Heart J. 1994 Nov;72(5):495-7. doi: 10.1136/hrt.72.5.495.Br Heart J. 1994.PMID: 7818972Free PMC article.