[1] Singapore Gen Hosp, Dept Renal Med, Outram Rd, Singapore 169608, Singapore
[2] Singapore Hlth Serv, Singhealth Duke NUS Transplant Ctr, Singapore, Singapore
[3] Singapore Gen Hosp, Dept Family Med & Continuing Care, Singapore, Singapore
[4] Singapore Gen Hosp, Dept Infect Dis, Singapore, Singapore