Meireles, Paula http://orcid.org/0000-0001-9055-7491
Fernandes, Francisco
Rocha, Miguel
Plankey, Michael
Barros, Henrique
Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (UIDB/04750/2020, SFRH/BD/112867/2015)
Article History
Accepted: 7 December 2020
First Online: 2 January 2021
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the Ethics Committee for Health of São João Hospital Center and Medical School, University of Porto, in 2012 (ID 104/12). Later, two extension requests for data collection were submitted and approved (April 2013 and March 2018). The data treatment authorization from the Portuguese Data Protection Authority was received in 2013 (Authorization Number 3897/2013). The 1964 Helsinki Declaration and its later amendments or comparable ethical standards are being followed. Those accepting to participate are asked to sign the informed consent, at each visit, and given a duplicate of the document.