Letter: Oesophageal ulceration.
D004935:Esophageal Diseases / Q000139:chemically induced*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D012996:Solutions; D013752:Tetracycline; D014456:Ulcer / Q000139:chemically induced*
D012996:Solutions; D013752:Tetracycline