For citations:
Аleksandrova E.N., Morozova T.I., Doktorova N.P. Tuberculosis in children and adolescents of various age groups in Saratov Region. Tuberculosis and Lung Diseases. 2016;94(6):25-30. (In Russ.) https://doi.org/10.21292/2075-1230-2016-94-6-25-30