1. Comparison of 7-day and repeated 24-hour recall of symptoms of cystic fibrosis 
Antonia V. Bennett, Donald L. Patrick, James F. Lymp, Todd C. Edwards, Christopher H. Goss 
Journal of Cystic Fibrosis 
Volume 9, Issue 6, Pages (December 2010)
DOI: /j.jcf
Copyright © 2010 European Cystic Fibrosis Society Terms and Conditions

2. Fig. 1 CF Respiratory Symptoms Diary (CFRSD) items.
Journal of Cystic Fibrosis 2010 9, DOI: ( /j.jcf )
Copyright © 2010 European Cystic Fibrosis Society Terms and Conditions