For citations:

Michailova E.I., Pimanov S.I., Voropaev E.V. FAECES-PROTECTING AND HIDDEN BLOOD IN FAECES IN UNINVASIVE DIAGNOSTIC OF STOMACH ORGANIC PATHOLOGY. Health and Ecology Issues. 2008;(1):59-64. (In Russ.) https://doi.org/10.51523/2708-6011.2008-5-1-12