Funding for this research was provided by:
Sociedade Portuguesa de Oftalmologia
Received: 15 May 2020
Accepted: 15 October 2020
First Online: 27 October 2020
Ethics approval and consent to participate
: Formal review and approval was obtained from the Portuguese Data Protection Authority (<i>Comissão Nacional de Proteção de Dados—</i>CNPD), Human Research Ethics Committee (HREC) of <i>Centro Hospitalar e Universitário de Coimbra</i> (CHUC) and Institutional Review Board (IRB) of the Faculty of Medicine of the University of Coimbra (FMUC). Additionally, each participating core health care provider needs to obtain approval from the respective Ethics Committee. Documentation of approval from each center is copied to the central governing office to ensure currency of approval is maintained.
: Not applicable.
: The authors declare that they have no competing interests in regard to this manuscript.