PT - JOURNAL ARTICLE AU - Y. Song AU - X. Li AU - X. Du TI - Exposure to nanoparticles is related to pleural effusion, pulmonary fibrosis and granuloma AID - 10.1183/09031936.00178308 DP - 2009 Aug 20 TA - European Respiratory Journal 4099 - http://erj.ersjournals.com/content/early/2009/08/20/09031936.00178308.short 4100 - http://erj.ersjournals.com/content/early/2009/08/20/09031936.00178308.full