Received: 18 March 2021
Accepted: 29 August 2021
First Online: 9 September 2021
: The project “Born in Belo Horizonte: Survey on childbirth and birth” was approved by the Research Ethics Committee of Federal University of Minas Gerais (UFMG), under Opinion n. CAAE-0246.0.203.000. All puerperal women and directors of each maternity hospital have signed the Free and Informed Consent Term, according to ethical guidelines described in the National Health Council Resolution n. 466, from December 12, 2012, which addresses research with human beings. All procedures performed in studies involving human participants were in compliance with the ethical standards of the institutional research committee, as well as with the 1964 Helsinki declaration and with its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare no competing interests.