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Zuppinger K, Joss E, Locher A, Rotter A, Zurbrügg R.Zuppinger K, et al.Schweiz Rundsch Med Prax. 1975 Sep 2;64(35):1101-13.Schweiz Rundsch Med Prax. 1975.PMID: 1215296German.No abstract available.
Tietze HU, Zurbrugg R, Zuppinger K, Joss E, Käser H.Tietze HU, et al.Schweiz Med Wochenschr. 1970 Mar 21;100(12):545-7.Schweiz Med Wochenschr. 1970.PMID: 5417344German.No abstract available.