Text and Data Mining valid from 2018-04-12
Received: 3 October 2017
Accepted: 4 April 2018
First Online: 12 April 2018
Ethics approval and consent to participate
: The Ethics and Research Committees of Federal University of São Paulo/Paulista School of Medicine, São Paulo, São Paulo State, Brazil (approval No. 244468) on 12 April 2013 and Paraiba Valley Regional Hospital and Taubaté University Hospital, University of Taubaté, Taubaté, São Paulo State, Brazil (No. 009/13) on 18 June 2013 approved this study. We have obtained the written informed consent for participation in the study from all participants.
: The authors declare that they have no competing interests.
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