“Evaluation of Periodontal Disease As a Risk Factor for Preterm Birth and Low Birth Weight in Pregnant Women Attending the Gineco-Obstetrics Service of the Amistad Mexico-Nicaragua Hospital in the Municipality of Ticuantepe”. 2017. Revista Torreón Universitario 5 (14): 28-36. https://revistas.unan.edu.ni/index.php/Torreon/article/view/3301.