Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (04/0882.7)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (BR) CNPq (481141/2007-3)
Received: 17 April 2018
Accepted: 24 June 2019
First Online: 12 July 2019
Ethics approval and consent to participate
: The study was approved by the Research Ethics Committee at Universidade Federal de Pelotas Medical School (CEP/FAMED/UFPEL) under the number OF.012/07. Mothers who agreed to undergo an interview entered the study after signing a free informed consent. Voluntary participation was guaranteed by explaining the participants they could withdraw from the study at any time without the need of giving any reason. The confidentiality of the provided information was assured.
: Not applicable.
: The authors declare that they have no competing interests.