PT - JOURNAL ARTICLE AU - WN Gardner TI - The CO2 response: usefulness and uncertainties AID - 10.1183/09031936.93.06050611 DP - 1993 May 01 TA - European Respiratory Journal PG - 611--613 VI - 6 IP - 5 4099 - http://erj.ersjournals.com/content/6/5/611.short 4100 - http://erj.ersjournals.com/content/6/5/611.full SO - Eur Respir J1993 May 01; 6