Guo-xin DUN ; Li-xin LIU ; Jang-wei ZHU ; Hati PAE ; Jiang-guo HE ; Lei CEN
Chinese Journal of Industrial Hygiene and Occupational Diseases 2003;21(3):168-168
Alveolitis, Extrinsic Allergic ; diagnosis ; therapy ; Humans ; Occupational Diseases ; diagnosis ; therapy