public function synchronize_patients()
 {
     $data['regimens'] = Regimen::getAll();
     $data['supporters'] = Supporter::getAll();
     $data['service_types'] = Regimen_Service_Type::getAll();
     $data['sources'] = Patient_Source::getAll();
     $data['drugs'] = Drugcode::getAll();
     $data['regimen_change_purpose'] = Regimen_Change_Purpose::getAll();
     $data['visit_purpose'] = Visit_Purpose::getAll();
     $data['opportunistic_infections'] = Opportunistic_Infection::getAll();
     $data['regimen_drugs'] = Regimen_Drug::getAll();
 }