Ramírez Enríquez V, Ramos Noboa I. Comparative study of anxiety levels generated by COVID-19 in patients with a previous diagnosis of reaction to stress. CU [Internet]. 2021Sep.14 [cited 2024Jul.3];14(37):39-8. Available from: https://ojs.unemi.edu.ec/index.php/cienciaunemi/article/view/1306