title: "Endoscopy blues".
authors.forename: Ahmed
authors.initials: A
authors.lastname: Dahshan
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D005773:Gastroscopy / Q000009:adverse effects*; D006396:Hematemesis / Q000175:diagnosis / Q000209:etiology; D006801:Humans; D008297:Male; D008708:Methemoglobinemia / Q000175:diagnosis* / Q000209:etiology*; D008751:Methylene Blue; D014069:Tonsillitis / Q000601:surgery
chemical_list: D008751:Methylene Blue