Petkov, Atanas, Rositsa Toncheva, and Yana Kashilska. 2022. “MONITORING OF NUTRITION THERAPY AND KEY GUIDELINES REGARDING THE SPECIFICITY OF MEDICAL NUTRITION IN PATIENTS WITH COVID-19 AND POST-COVID SYNDROME”. KNOWLEDGE - International Journal 50 (4):483-89. https://ojs.ikm.mk/index.php/kij/article/view/4955.