Funding for this research was provided by:
Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (APQ-0337-4.08/13)
Text and Data Mining valid from 2019-02-27
Received: 5 October 2018
Accepted: 5 February 2019
First Online: 27 February 2019
Compliance with ethical standards
: This study was approved by the Research Ethics Committee of the CCS / UFPE (opinion no 2.452.339), respecting the ethical aspects of Resolution 466/12 of the National Health Council and the Declaration of Helsinki. All participants signed the FICF after being informed of the objectives, risks and benefits of the research.
: Luanda Alves Xavier Ramos, François Talles Medeiros Rodrigues, Lívia Shirahige, Maria de Fátima Alcântara Barros, Antônio Geraldo Cidrão de Carvalho, Marcelo Renato Guerino, Ana Paula de Lima Ferreira, Ricardo Oliveira Guerra and Maria das Graças Rodrigues de Araújo declare that they have no competing interests.
: There was previous and express consent to the use of the images.