De la Vega A, Salicrup E, Verdiales M. A Nationwide Program for the Use of Preconceptional Folic Acid to Prevent the Development of Open Neural Tube Defects. Who is really using Folic Acid?. PRHSJ [Internet]. 2013 Mar. 25 [cited 2025 Nov. 5];21(1). Available from: https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/905