Rodríguez, Jorge L., et al. “Prospective Study Using Standardized Methodology for Antimicrobial Susceptibility of Gram-Positive Cocci Isolated from the Puerto Rico Medical Center”. Puerto Rico Health Sciences Journal, vol. 21, no. 4, Apr. 2012, https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/755.