Immunosuppression
All organ recipients were on immunosuppression, and the immunosuppressive therapy was continued as previously prescribed. Immunosuppressive drugs included mammalian target of rapamycin inhibitors (sirolimus), calcineurin inhibitors (cyclosporine or tacrolimus), antimetabolite (azathioprine or mycophenolate mofetil) and corticosteroids (prednisone or methyl prednisolone). Drug monitoring was carried out during the perioperative period to reach the required dose. No patient in the matching group was on immunosuppression for any reason. The function of transplanted organ was closely monitored during the perioperative period.