protected override async void OnAppearing()
        {
            try
            {
                patientController = new PatientController();
                patients          = await patientController.GetAllPatientsAsync();

                ListViewPatients.ItemsSource = patients;
            }
            catch (ApiException ex)
            {
                await DisplayAlert(AppResources.ErrorTitle, LogicHelper.ErrorMessage(ex.ErrorCode), AppResources.DialogOk);
            }
            catch (ConnectionException)
            {
                await DisplayAlert(AppResources.ErrorTitle, AppResources.ConnectionException, AppResources.DialogOk);
            }
        }