Chenghua LIU ; Shibiao DING ; Qunshui WANG ; Minjin WU
Chinese Journal of Industrial Hygiene and Occupational Diseases 2014;32(6):444-445
Adult ; Drug Resistance, Microbial ; Female ; Humans ; Male ; Middle Aged ; Pneumonia ; complications ; microbiology ; Silicotuberculosis ; complications ; microbiology