Funding for this research was provided by:
Health Bureau of Shanghai City (201440029)
NIH National Eye Institute (R01EY020641)
Received: 12 August 2017
Accepted: 16 January 2018
First Online: 27 January 2018
Ethics approval and consent to participate
: The Declaration of Helsinki was strictly followed in all procedures. Written informed consent, which was approved by the Office of Research Ethical Committee of the Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, was obtained from all subjects.
: Not applicable.
: The authors declare that they have no competing interests.
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