Funding for this research was provided by:
Univerzita Karlova v Praze (UNCE 204064, PROGRES Q25/LF1/2, SVV 260367/2017, PROGRES-Q26/LF1)
Grantová Agentura, Univerzita Karlova (GAUK 250361/2017)
Text and Data Mining valid from 2018-09-17
Received: 22 January 2018
Accepted: 6 September 2018
First Online: 17 September 2018
Ethics approval and consent to participate
: The study was approved by the Ethics committee of the General University Hospital in Prague (reference no. 151/11 S-IV) or Moorfields Eye Hospital (REC references 13/LO/1084 and 09/H0724/25). Written consent was obtained from all participants or their parents/legal guardians before inclusion.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.