[The probability of the malignization of chronic stomach ulcer].
D002908:Chronic Disease; D006801:Humans; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000150:complications*; D013276:Stomach Ulcer / Q000150:complications*
O veroiatnosti malignizatsii khronicheskoĭ iazvy zheludka.