Johnsson H., Heldin P., Sedin G. and Laurent T.C. 1997. Hyaluronan Production in vitro by Fetal Lung Fibroblasts and Epithelial Cells Exposed to Surfactants of N-acetylcysteine. Upsala Journal of Medical Sciences. 102, 3 (Dec. 1997), 199-210. DOI:https://doi.org/10.3109/03009739709178941.