1. Obstetrics and Gynecology Department; Hospital de Clínicas de Porto Alegre; Porto Alegre Brazil
2. Graduate Program in Health Sciences, Gynecology and Obstetrics; Porto Alegre Brazil
3. Postgraduate Studies Program in Cardiology, School of Medicine; Universidade Federal do Rio Grande do Sul; Porto Alegre Brazil
4. Faculty of Health Sciences, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, R. Samuel McLaughlin Foundation Exercise and Pregnancy Laboratory, School of Kinesiology; The University of Western Ontario; London Canada
5. Children's Health Research Institute; London Canada