Tchaneva, G., Bogdanova, K. and Dimitrina (2022) “INFLUENCE OF CERTAIN FACTORS ON THE RESPIRATORY SYSTEM AT THE HEALTH CARE PROFESSIONALS”, KNOWLEDGE - International Journal , 52(4), pp. 461–466. Available at: https://ojs.ikm.mk/index.php/kij/article/view/5212 (Accessed: 1 August 2026).