Funding for this research was provided by:
Singapore Ministry of Health’s National Medical Research Council (NMRC) under its Talent Development Scheme (NMRC/STaR/0003/2008)
Biomedical Research Council, Singapore (08/1/35/19/550)
Text and Data Mining valid from 2019-12-01
Received: 19 September 2018
Accepted: 6 November 2019
First Online: 5 December 2019
Ethics approval and consent to participate
: Approval was obtained from the Singapore Eye Research Institute (SERI) Institutional Review Board (R341/34/2003 and 2006/612/A), and all participants signed a written informed consent.
: No individual data have been attached or reproduced in any form in the manuscript.
: The authors declare that they have no competing interests.