1Section of Physical Therapy, Women's Hospital, State University of Campinas (UNICAMP), Campinas, Brazil

2Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil

3Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, Québec, Canada

Reprint requests to: Marcela Grigol Bardin, PhD, Rua Alexander Fleming, 101 Cidade Universitária, Campinas 13083-881, São Paulo, Brazil. E-mail: [email protected]

The authors have declared they have no conflicts of interest.

Ethical aspects: IRB approval number 1.588.648 (June 14, 2016).

Ethical approval and consent to participate: This study has been approved by the Institutional Review Board of the University of Campinas (CAAE: 54665316.5.0000.5404), and written informed consent was obtained from all individual participants included in the study; confidentiality and anonymity were ensured. All procedures performed in studies were in accordance with the ethical standards of the institutional and/or national research committee and with the Helsinki declaration.