1. Faculty of Medicine, Public Health and Nursing, Gadjah Mada University, Yogyakarta, Indonesia;
2. Heller School for Social Management and Policy, Brandeis University, Waltham, Massachusetts;
3. Pediatrics Department, Faculty of Medicine, Public Health and Nursing, Dr. Sardjito General Hospital, Gadjah Mada University, Yogyakarta, Indonesia;
4. Department of Infectious Disease Epidemiology, Faculty of Epidemiology and Public Health, London School of Hygiene & Tropical Medicine, London, United Kingdom
5. Centre for Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom;