title: Perioral stains after ortho-phthalaldehyde disinfection of echo probes.
mesh_terms: D004203:Disinfection / Q000379:methods*; D019160:Endosonography / Q000009:adverse effects* / Q000379:methods; D004866:Equipment Contamination / Q000517:prevention & control; D006801:Humans; D009055:Mouth / Q000000981:diagnostic imaging / Q000187:drug effects*; D009764:o-Phthalaldehyde / Q000009:adverse effects* / Q000494:pharmacology
chemical_list: D009764:o-Phthalaldehyde