1. Division of Endocrinology, Diabetes and Metabolism, Faculty of Medicine, Airlangga University, Dr Soetomo General Hospital, Surabaya, East Java 60132, Indonesia
2. Department of Internal Medicine, Faculty of Medicine, Airlangga University, Dr Soetomo General Hospital, Surabaya, East Java 60132, Indonesia
3. Division of Tropical and Infectious Diseases, Department of Internal Medicine, Faculty of Medicine, Airlangga University, Dr Soetomo General Hospital, Surabaya, East Java 60132, Indonesia