public string EditDoctorChamberFees(DoctorChamber doctorChamber)
        {
            int rowAffected = aDoctorGateway.EditDoctorChamberFees(doctorChamber);

            if (rowAffected > 0)
            {
                return("Success");
            }
            else
            {
                return("Doctor fees editing failed.");
            }
        }