Blundell, Andrew R., et al. “The Prevalence of Depression Symptoms and Frequency of Risk Factors in Medical and Nursing Students: A Descriptive Cross-Sectional Study”. Puerto Rico Health Sciences Journal, vol. 42, no. 1, Mar. 2023, pp. 70-76, https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/2470.