Funding for this research was provided by:
Non-profit Central Research Institute Fund of Chinese Academy of Medical Sciences (2018PT32029)
Article History
Received: 4 March 2019
Accepted: 31 October 2019
First Online: 21 November 2019
Ethics approval and consent for participate
: This study was approved by the Review Board of Peking Union Medical College Hospital. Written informed consent to participate was obtained from the patient.
: Written informed consent for publication was obtained from the patient. A copy of the written consent is available for review by the editor of this journal.
: One of the authors, Youxin Chen, is a member of the editorial board of BMC ophthalmology. No other competing interests exist.