Pérez-Perdomo RV, Rodríguez-Figueroa L. Characteristics of Cancer Patients Under Age 20 at a Population-Based Registry, Puerto Rico, 1980-81. PRHSJ [Internet]. 2014 Apr. 15 [cited 2025 Dec. 20];19(2). Available from: https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/1155