Application created at the cantonal hospital organization (EOC) for monitoring patients' symptoms. The daily monitoring of the patient's symptoms (Ecological Momentary Assessment or EMA) is useful for obtaining detailed and accurate information about the disease the patient is suffering from. The data collected by the application are used for clinical and scientific purposes. The data is recorded by the application in coded form, and no one, apart from the EOC doctors involved in the study, can access it or go back to information about the user. The use of the application is restricted to patients authorized by EOC personnel and provided with a user code (patientID). For information regarding the use of the application contact: RicercaOrtopedia.ORL@eoc.ch