PT - JOURNAL ARTICLE AU - I Gregg TI - Eleven peak flow meters: a clinical evaluation AID - 10.1183/09031936.98.12020511 DP - 1998 Aug 01 TA - European Respiratory Journal PG - 511--512 VI - 12 IP - 2 4099 - http://erj.ersjournals.com/content/12/2/511.short 4100 - http://erj.ersjournals.com/content/12/2/511.full SO - Eur Respir J1998 Aug 01; 12