Serrano J, De Jesús-Berríos Y, Santos RA, Dexter D, Nazario CM, Montalvo F. Adaptation of the Medical Research Council Dyspnea Scale and the Oxygen Cost Diagram for its use in Puerto Rico. PRHSJ [Internet]. 2007 Jun. 1 [cited 2025 Dec. 19];26(2). Available from: https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/253