PT - JOURNAL ARTICLE AU - B. G. Cosio AU - J. B. Soriano TI - Theophylline again? Reasons for believing AID - 10.1183/09031936.00011309 DP - 2009 Jul 01 TA - European Respiratory Journal PG - 5--6 VI - 34 IP - 1 4099 - http://erj.ersjournals.com/content/34/1/5.short 4100 - http://erj.ersjournals.com/content/34/1/5.full SO - Eur Respir J2009 Jul 01; 34