Etiologic and epidemiologic characteristics of respiratory pathogenic bacterial infection in 5 938 children from Changzhi City in Shanxi Province 
Feng Ruijie, Li Xiaoze
International Medicine and Health Guidance News . 2022, (6): 793 -799 .  DOI: 10.3760/cma.j.issn.1007-1245.2022.06.015