Correa, Ramonita, Yocasta Brugal, Lenyska Valentín, Jorge Pérez, and José Pérez-Gumá. 2009. “Peer-Teaching: An Effective Learning Experience?”. Puerto Rico Health Sciences Journal 28 (1). https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/167.