title: Patients' awareness of melaena.
mesh_terms: D000368:Aged; D005279:Fenoprofen / Q000009:adverse effects*; D006801:Humans; D008551:Melena / Q000139:chemically induced*; D010666:Phenylpropionates / Q000009:adverse effects*
chemical_list: D010666:Phenylpropionates; D005279:Fenoprofen