[The quality of German medical journals].
Köbberling
J
J
Medizinischen Klinik, Kliniken St. Antonius, Lehrstuhl Innere Medizin II der Universität Witten/Herdecke, Carnaper Strasse 48 42283 Wuppertal.
D004995:Ethics, Professional; D005858:Germany; D007802:Language; D010506:Periodicals as Topic / Q000592:standards*; D011643:Publishing / Q000592:standards*; D011786:Quality Control