1. School of Medicine Nankai University Tianjin China
2. Centre for Myopia Research, School of Optometry The Hong Kong Polytechnic University Kowloon Hong Kong SAR
3. Centre for Eye and Vision Research (CEVR) Shatin Hong Kong SAR
4. Research Centre for SHARP Vision (RCSV) The Hong Kong Polytechnic University Kowloon Hong Kong SAR
5. Southampton Clinical Trials Unit University of Southampton Southampton UK