private void RefreshSpecialtyProperty()
        {
            Specialties.Clear();

            try
            {
                DbContext.Specialties.OrderBy(x => x.Name).ToList().ForEach(x => Specialties.Add(x));
                OnPropertyChanged(nameof(Specialties));
            }
            catch (EntityException e)
            {
                OnEntityException(e);
            }
            catch (DbEntityValidationException e)
            {
                OnDbEntityValidationException(e);
            }
        }