González-Sánchez, Juan A., and Giovanni F. Ramírez-Arroyo. “Chikungunya Virus: History, Geographic Distribution, Clinical Picture, and Treatment”. Puerto Rico Health Sciences Journal, vol. 37, no. 4, Dec. 2018, pp. 187-94, https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/1735.