1. Departments of Obstetrics & Gynaecology and Paediatrics,
2. Department of Neonatology, Perinatal Medicine Center, Medical College of Jinan University, Guangzhou, China
3. Department of Neonatology, The 2nd Affiliated Hospital of Guangzhou Medical College, Guangzhou, China
4. The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong
5. Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, University Eye Centre, Hong Kong Eye Hospital, Kowloon, Hong Kong