Citation:Helfand M, Marton KI, Zimmer-Gembeck MJ, Sox HC Jr 1997

Citation

Helfand M, Marton KI, Zimmer-Gembeck MJ, Sox HC Jr. History of visible rectal bleeding in a primary care population. Initial assessment and 10-year follow-up. JAMA 1997 Jan 1;277(1):44-8 Available from: http://www.ncbi.nlm.nih.gov/pubmed/8980209.

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