Funding for this research was provided by:
Portuguese Ophthalmology Society
Received: 20 September 2020
Accepted: 1 December 2020
First Online: 18 December 2020
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Egas Moniz Hospital, West Lisbon Hospital Center, and informed consent was obtained from each patient.
: Not applicable.
: The authors declare that they have no competing interests.