Summary: The investigator will issue a Patient Information Consent for the participant in the study. 1.Patients will be asked to complete the Reflux Symptom Index questionnaire.~Clinical survey, medical history 2. Objective methods for assessing the patient's condition:~- examination of ENT organs: rhinoscopy, otoscopy, pharyngoscopy and laryngoscopy 3. Laboratory and instrumental research methods - Endosc...