Funding for this research was provided by:
Instituto de Salud Carlos III (RD12/0018/0013, CP12/03081)
Text and Data Mining valid from 2018-08-30
Received: 2 May 2018
Accepted: 10 August 2018
First Online: 30 August 2018
Ethics approval and consent to participate
: The study design and consent procedures involved in this survey have been approved by the Research Ethics Committee of the Valencia University (reference number: H1431958278890). Recruitment was conducted under strict accordance with requirements of Resolução No. 196, Comissão Nacional de Ética em Pesquisa, Ministério da Saúde, Brazil, to guarantee the voluntary character of the participation in the study and the anonymity and confidentiality of participants. Signed, informed consent was obtained from each participant or his/her parent/legal guardian.
: Not applicable.
: The authors declare that they have no competing interests.
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