Can preliminary screening of dyspeptic patients allow more effective use of investigational techniques?Br Med J (Clin Res Ed) 1985; 290 doi: http://dx.doi.org/10.1136/bmj.290.6472.936-b (Published 23 March 1985) Cite this as: Br Med J (Clin Res Ed) 1985;290:936
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