DOI:
10.1055/s-00000012
Endoscopy
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References
Richardson WS, Wilson MC, Nishikawa J. et al.
The well-built clinical question: a key to evidence-based decisions.
ACP J Club 1995;
123: A12-13 ; http://www.ncbi.nlm.nih.gov/pubmed/7582737. Accessed 17 Jun 2019
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