1. Department of Medical Biochemistry, Faculty of Medicine, University of Airlangga, Surabaya 60131, Indonesia
2. Institute of Tropical Disease, University of Airlangga Campus C, Mulyorejo, Surabaya 60286, Indonesia
3. Department of Medical Microbiology, Faculty of Medicine, University of Airlangga, Surabaya 60131, Indonesia
4. Department of Internal Medicine, Faculty of Medicine, University of Airlangga, Dr Soetomo General Hospital, Surabaya 60286, Indonesia