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Duarte has received Scientific Redactor of Forum D () which received unrestricted financial support of pharmaceutical companies.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}},{"value":"This study was conducted respecting the Declaration of Helsinki and was approved by Coimbra Medical School Ethics Committee and EpiReumaPt Scientific Board.EpiReumaPt was performed according to the principles established by the Declaration of Helsinki, revised in Fortaleza []. EpiReumaPt was approved by the National Committee for Data Protection (Comiss\u00e3o Nacional de Prote\u00e7\u00e3o de Dados) and by the NOVA Medical School Ethics Committee. Written informed consent was obtained in all phases for all participants, including a separated informed consent for biobank. Further details of ethical issues of EpiReumaPt have been described elsewhere [].","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}}],"article-number":"36"}}