Fernández-Ruiz M, Guerra-Vales JM, Colina-Ruizdelgado F. Comorbidity negatively influences prognosis in patients with extrahepatic cholangiocarcinoma. World J Gastroenterol 2009; 15(42): 5279-5286 [PMID: 19908335 DOI: 10.3748/wjg.15.5279]
Corresponding Author of This Article
Mario Fernández-Ruiz, MD, Department of Internal Medicine, University Hospital “12 de Octubre”, Avenue Córdoba, s/n, Universidad Complutense, Madrid 28041, Spain. mario_fdezruiz@yahoo.es
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