1. Maternal Health Coordinator, Partners in Health, Jaltenango, Mexico
2. General Director, Partners in Health, Jaltenango, Mexico
3. Assistant Professor, Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
4. Associate Professor, Iztacala Faculty of Higher Studies, National Autonomous University of Mexico, Mexico City, Mexico
5. Professor, National School of Nursing and Obstetrics, National Autonomous University of Mexico, Mexico City, Mexico.