private void GetPatients()
{
patients.Clear();
patients = fachkonzept.GetPatients().ToList();
patientBindingSource.DataSource = patients;
patientBindingSource.ResetBindings(false);
// get matching illnesses to first patient
Patient patient = patients.Count == 0 ? new Patient() : patients.First();
matchingIllnesses = fachkonzept.GetPatientIllnesses(patient).ToList();
matchingIllnessBindingSource.DataSource = matchingIllnesses;
matchingIllnessBindingSource.ResetBindings(false);
}