1. First Affiliated Hospital of Fuzhou General Hospital, Pu Tian City Fu Jian province; PR China
2. Department of Pathology; Faculty of Medicine and Health Sciences; University of Stellenbosch; Tygerberg Cape Town South Africa
3. Saw Swee Hock School of Public Health; National University of Singapore; Singapore
4. Pharmacy and Therapeutics Office; Group Corporate Development, National Healthcare Group; Singapore