[The practical value of various tubeless methods of determining gastric acidity].
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D010450:Endopeptidases / Q000652:urine*; D005745:Gastric Acidity Determination; D006801:Humans; D008722:Methods
D010450:Endopeptidases
O prakticheskoi tsennosti nekotorykh bezzondovykh metodov opredeleniia kislotnosti zheludochnogo soka.