Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Pará – FADESP/ Pró-Reitoria de Pesquisa e Pós-Graduação da Universidade Federal do Pará – PROPESP (Edital 02-2018-PIAPA)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – CAPES (Pró-Amazônia, Grant No. 3311/2013)
Brazilian Research Council – CNPq (307749/2004-5)
Fundação Amazônia de Amparo a Estudos e Pesquisas do Pará – FAPESPA (ICAAF No 039/2017)
Text and Data Mining valid from 2018-09-10
Received: 4 July 2018
Accepted: 24 August 2018
First Online: 10 September 2018
Ethics approval and consent to participate
: All subjects provided informed written consent prior to their participation, in accordance with the Declaration of Helsinki, which was voluntary. Patient data were coded to preserve confidentiality. The consent could be obtained directly from the patient and this was approved by the ethics committee. This study was approved by the local ethics committee (Comitê de Ética em Pesquisa do Hospital Universitário João de Barros Barreto, protocol number 2.160.639), and it followed the International Ethical Guidelines for Health-related Research involving Humans (CIOMS/WHO).
: The authors declare that they have no competing interests.
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