TRIFONOVA, Iva; ANGELOVA, Svetla; KORSUN, Neli. AETIOLOGICAL STRUCTURE OF ACUTE RESPIRATORY TRACT INFECTIONS AMONG CHILDREN YOUNGER THAN 5 YEARS IN BULGARIA. PROBLEMS of Infectious and Parasitic Diseases, Sofia, Bulgaria, v. 47, n. 1, p. 9–15, 2019. DOI: 10.58395/pipd.v47i1.11. Disponível em: https://pipd.ncipd.org/index.php/pipd/article/view/47_1_2_AETIOLOGICAL_STRUCTURE_OF_ACUTE_RESPIRATORY_TRACT_INFECTI.. Acesso em: 19 may. 2024.