Authors: Grootendorst, DC van den Bos, JW Romeijn, JJ Veselic-Charvat, M Duiverman, EJ Vrijlandt, EJLE Sterk, PJ Roldaan, AC

Citation: Dc. Grootendorst et al., Induced sputum in adolescents with severe stable asthma. Safety and the relationship of cell counts and eosinophil cationic protein to clinical severity, EUR RESP J, 13(3), 1999, pp. 647-653