Funding for this research was provided by:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (306471/2017-5)
Fundação de Amparo à Pesquisa do Estado de São Paulo (2013/25827-5)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (001)
Received: 10 August 2020
Accepted: 28 July 2021
First Online: 7 August 2021
: The informed consent was not requested to the patients because this is a descriptive and retrospective study in which privacy and confidentiality of clinical data and the subjects involved were assured. The Ethics Committee of the Health Sciences Research Institute (HSRI), National University of Asuncion (UNA), approved this study (Permit Nº P15/2011).
: Not applicable.
: The authors declare that they have no competing interests.