1. Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, Georgia, USA
2. Clinical Professor Emerita, Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, Georgia, USA
3. Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
4. Department of Women’s and Newborn’s Health Promotion, School of Midwifery, University of Chile, Santiago, Chile