1. Neonatology Working Group, Department of Pediatrics Harapan Kita Women and Children Hospital Jakarta Indonesia
2. Faculty of Medicine Pelita Harapan University Tangerang Indonesia
3. Department of Pediatrics Beatrix Children's Hospital, University Medical Center Groningen Groningen The Netherlands
4. Department of Ophthalmology Cipto Mangunkusumo Hospital Jakarta Indonesia
5. Department of Epidemiology University of Indonesia, School of Public Health Depok Indonesia