Letter

Double pathology as a cause of occult gastrointestinal blood loss.

Br Med J (Clin Res Ed) 1981; 282 doi: https://doi.org/10.1136/bmj.282.6267.902-b (Published 14 March 1981) Cite this as: Br Med J (Clin Res Ed) 1981;282:902

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