aDivision of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital

bRenal Immunology and Renal Transplant Research Unit, Department of Medicine, Faculty of Medicine, Chulalongkorn University

cExcellence Center for Solid Organ Transplantation, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand

Correspondence to Yingyos Avihingsanon, Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok 10330, Thailand. Tel: +66 2 2564251; e-mail: [email protected]