title: [Serum group I pepsinogen (PG I) levels in peptic ulcer. Establishment of normal values].
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010435:Pepsinogens / Q000097:blood*; D010437:Peptic Ulcer / Q000097:blood*; D012016:Reference Values
chemical_list: D010435:Pepsinogens