Ríos JL, Betancourt J, Pagán I, Fabián C, Cruz SY, González AM, et al. Caffeinated-beverage Consumption and its Association with Socio-demographic Characteristics and Selfperceived Academic Stress in First and Second Year Students at the University of Puerto Rico Medical Sciences Campus (UPR-MSC). PRHSJ [Internet]. 2013 May 29 [cited 2025 Dec. 5];32(2). Available from: https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/808