Ex-drinking may be a surrogate for unmeasured risk factors for upper gastrointestinal bleeding: reappraisal and an additional survey of subjects from a case–control study in Japan

Author: Watanabe Hikaru   Kamijima Yukari   Sato Tsugumichi   Kaufman David   Kubota Kiyoshi  

Publisher: Springer Publishing Company

ISSN: 0393-2990

Source: European Journal of Epidemiology, Vol.24, Iss.3, 2009-03, pp. : 143-147

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