Rivas, Hiram, et al. “Lung and Bronchus Cancer in Puerto Rico: Changes in Incidence and Mortality Rates by Histology and Sex During 1987-2003”. Puerto Rico Health Sciences Journal, vol. 30, no. 4, Nov. 2011, https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/515.