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Grünhagen, Dirk J., Declan FJ Dunne, Richard P. Sturgess, Nick Stern, Stephen Hood, Stephen W. Fenwick, Graeme J. Poston, και Hassan Z. Malik. Metal Stents: A Bridge to Surgery in Hilar Cholangiocarcinoma. Blackwell Publishing Ltd, 2013.

Grünhagen, Dirk J., et al. Metal Stents: A Bridge to Surgery in Hilar Cholangiocarcinoma. Blackwell Publishing Ltd, 2013.