De Jesús-Berríos, Yohana, et al. “Respiratory Pathogens in Bronchoalveolar Lavage in a Puerto Rican Population Infected With the Human Immunodeficiency Virus”. Puerto Rico Health Sciences Journal, vol. 24, no. 3, Sept. 2005, https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/353.