public IActionResult UpdatePatient(
            [GuidNotEmpty] Guid id,
            [FromBody] PatientDTO patientDTO)
        {
            Patient patient = null;

            patient = _patientDbService.FindPatient(id);
            if (patient == null)
            {
                return(ReturnProblem("Patient not found.", StatusCodes.Status404NotFound));
            }

            patient.Id            = id;
            patient.FirstName     = patientDTO.FirstName;
            patient.LastName      = patientDTO.LastName;
            patient.DateOfBirth   = patientDTO.DateOfBirth;
            patient.LastFourOfSSN = patientDTO.LastFourOfSSN;

            _patientDbService.UpdatePatient(patient);

            return(NoContent());
        }