Widimsky, Jiri Otto Klein from Prague University Hospital performed the world first diagnostic cardiac catheterization in 11 Czech patients in 1929. [electronic resource] - European heart journal 04 2020 - 1323-1325 p. digital Publication Type: Journal Article ISSN: 1522-9645 Standard No.: 10.1093/eurheartj/ehaa103 doi Subjects--Topical Terms: Cardiac CatheterizationCzech RepublicDiagnostic Techniques, CardiovascularHeartHospitals, UniversityHumans