Herrera, Julián A., Myriam Arévalo Herrera, Adriana Villegas, Sócrates Herrera, Maribel Villalba, and Arnoldo Bromet. “Calcium Oral Supplementation in Adolescent Pregnant Women.”. Colombia Médica 37, no. 2 Supl 1 (1): 15-20. Accessed September 27, 2022. https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/432.