Text and Data Mining valid from 2018-04-11
Received: 30 January 2017
Accepted: 26 March 2018
First Online: 11 April 2018
Ethics approval and consent to participate
: The EpiReumaPt study was performed according to the principles established by the 1964 Helsinki declaration and its later amendments and according to Portuguese law. EpiReumaPt was reviewed and approved by competent Portuguese authorities: NOVA Medical School Ethics Committee and National Committee for Data Protection. The study was also reviewed and approved by the Ethical Committees of Regional Health Authorities. Further details of ethical issues of EpiReumaPt have been described elsewhere [CitationRef removed].Written informed consent was obtained from all individual participants included in the study [CitationRef removed].
: Not applicable.
: The authors declare that they have no competing interests.
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