Fierro Aguilar JP, Rincón Luzuriaga AE. Elaboration and proposal of a methodological guide for an occupational health and safety system based on the international standard OHSAS 18001 in H.G.C.A. Laboratories. INQUIDE [Internet]. 2022 Aug. 17 [cited 2024 Dec. 22];2(01):21-8. Available from: https://revistas.ug.edu.ec/index.php/iqd/article/view/1804