1. Department of Internal Medicine; Chiang Mai University; Chiang Mai Thailand
2. Department of Medicine; McMaster University; Hamilton ON Canada
3. Department of Clinical Epidemiology and Biostatistics; McMaster University; Hamilton ON Canada
4. Department of Oncology; McMaster University; Hamilton ON Canada
5. Hamilton Regional Laboratory Medicine Program; McMaster University; Hamilton ON Canada
6. Department of Pathology and Molecular Medicine; McMaster University; Hamilton ON Canada