Identification of adults with symptoms suggestive of obstructive airways disease : validation of a postal respiratory questionnaire
Citation
Frank , T L , Frank , P I , Cropper , J A , Hazell , M L , Hannaford , P C , McNamee , R R , Hirsch , S & Pickering , C A C 2003 , ' Identification of adults with symptoms suggestive of obstructive airways disease : validation of a postal respiratory questionnaire ' , BMC Family Practice , vol. 4 , 5 . https://doi.org/10.1186/1471-2296-4-5