1971

Acta Endoscopica et Radiocinmatographica

2008

1971

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1981

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1994

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2010

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1981

Endoscopy

2007

2008

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1961

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1972

1959

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1961

1973

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1981

Korean J Gastrointest Endosc

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Revista Mexicana de Ciruga Endoscpica

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2009

World J Gastrointest Endosc.(p)

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