Received: 11 July 2018
Accepted: 22 November 2018
First Online: 12 March 2019
Ethics approval and consent to participate
: The study was conducted in accordance with the amended Declaration of Helsinki. Local institutional review boards approved the protocol (Comissão de Ética para Análise de Projetos de Pesquisa – CAPPesq, reference number 706744) and written informed consent was obtained from all the patients or their surrogates.
: Not applicable.
: The authors declare that they have no competing interests.
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