Santamaría Herrera FJ. Pneumoconiosis in coal miners in two companies affiliated to the Instituto de Seguros Sociales, Seccional Valle del Cauca. Colomb Med [Internet]. 1992 Jun. 30 [cited 2024 Nov. 24];23(2):79-85. Available from: https://colombiamedica.univalle.edu.co/index.php/comedica/article/view/6344