Canaval, Gladys Eugenia, Marta Cecilia Gonzalez, Maria Clara Tovar, and Celmira Valencia. “The ‘Invisible’ in Pregnant wome¨s Experience*”. Investigación y Educación en Enfermería 21, no. 2 (May 14, 2008). Accessed January 31, 2025. https://revistas.udea.edu.co/index.php/iee/article/view/3010.