Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Estado de São Paulo (2013/15636-8, 2011/20401-4)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (305685/2011-2)
Received: 18 February 2019
Accepted: 10 July 2019
First Online: 16 July 2019
Ethics approval and consent to participate
: This study was approved by the ethics committees of São Paulo Hospital (Study number 1477/06), Albert Einstein Hospital (Study number 07/549) and Sírio Libanês Hospital (Study number 2006/27). Written informed consent was obtained from participants or from their relatives.
: Not applicable.
: The authors declare that they have no competing interests.