||Assistant Professor, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
Academic Consultant, Division of Infectious Diseases, University Medicine Cluster, National University Health System, Singapore.
Clinical pharmacology fellow (Antimicrobials), Food and Drug Administration, USA.
Clinical research fellow (HIV and herbal pharmacology), Johns Hopkins University, USA.
Registrar, Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore
Clinical research fellow (HIV Medicine), Infectious Diseases Research Centre, Tan Tock Seng Hospital, Singapore.
Medical Officer (Infectious Diseases, Internal Medicine and Cardiology), Tan Tock Seng Hospital, National University Hospital and Alexandra Hospital, Singapore.
Medical Officer (Medical oncology), Johns Hopkins Singapore Clinical Services, Singapore.
Intern (Surgery, Obstetrics/Gynaecology and Internal Medicine) - Alexandra Hospital and KK Women and Children's Hospital.