Colón, Edgardo, José S. Reyes, Carmen González-Keelan, and Consuelo Climent-Peris. “Prevalence of Steroid Receptors and HER 2 Neu in Breast Cancer Biopsies of Women Living in Puerto Rico”. Puerto Rico Health Sciences Journal 21, no. 4 (April 6, 2012). Accessed December 19, 2025. https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/748.