title: Iontophoresis in the ear--is it safe, effective, useful?
mesh_terms: D000779:Anesthetics, Local / Q000009:adverse effects; D003042:Cocaine / Q000009:adverse effects; D003638:Deafness / Q000139:chemically induced; D004427:Ear Diseases / Q000188:drug therapy*; D004432:Ear, Middle / Q000187:drug effects*; D005069:Evaluation Studies as Topic; D006801:Humans; D007478:Iontophoresis / Q000009:adverse effects
chemical_list: D000779:Anesthetics, Local; D003042:Cocaine