Expression and generation of interleukin-8, IL-6 and granulocyte-macrophage colony-stimulating factor by bronchial epithelial cells and enhancement by IL-1 beta and tumour necrosis factor-alpha - Cromwell,O.; Hamid,Q.; Corrigan,C.J.; Barkans,J.; Meng,Q.; Collins,P.D. (Immunology, 1992)