Black esophagus: should it be considered an unfavorable prognostic factor?

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Bibliographic Details
Title: Black esophagus: should it be considered an unfavorable prognostic factor?
Authors: Casella, G.1, Perego, D.1, Corti, G.2, Cambareri, A. R.2, Buda, C. A.3, Zoldan, C.4, Baldini, V.1
Source: Diseases of the Esophagus. Apr2001, Vol. 14 Issue 2, p166-168. 3p. 1 Black and White Photograph.
Database: Academic Search Ultimate
Description
ISSN:11208694
DOI:10.1046/j.1442-2050.2001.00177.x