| http://www.w3.org/ns/prov#value | - 48 to 72 hours to confirm the diagnosis of diffuse acute otitis externa and to exclude other causes, and??? prescribe a non-ototoxic topical preparation when the patient has a known or suspected tympanic membrane perforation.The guideline is intended for primary care and specialist clinicians, including otolaryngologists, family physicians, emergency physicians, internists, and other clinicians, f
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