By Ruthmann O.   Fischer A.   Hopt U.   Schrag H.   in Der Chirurg

ISSN:0009-4722|77|10|926-938

Springer Publishing Company ‎(2006)‎

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By Fischer A.   Schrag H.   Goos M.   Obermaier R.   Hopt U.   Baier P.   in Surgical Endoscopy

ISSN:0930-2794|22|3|683-688

Springer Publishing Company ‎(2008)‎

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By Karcz W.   Kulemann B.   Seifert G.   Schrag H.   Küsters S.   Marjanovic G.   Grüneberger J.   Braun A.   in Surgical Endoscopy

ISSN:0930-2794|25|7|2363-2363

Springer Publishing Company ‎(2011)‎

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