1. A Multicenter Study on Chronic Cough in Children
Anne B. Chang, PhD, Colin F. Robertson, MD, Peter P. Van Asperen, MD, Nicholas J. Glasgow, MD, Craig M. Mellis, MD, I. Brent Masters, PhD, Laurel Teoh, MD, Irene Tjhung, MBBS, Peter S. Morris, PhD, Helen L. Petsky, BNursing, Carol Willis, Lou I. Landau, MD 
CHEST 
Volume 142, Issue 4, Pages (October 2012)
DOI: /chest
Copyright © 2012 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Distribution of the five most frequent diagnoses, grouped according to age categories.
CHEST  , DOI: ( /chest )
Copyright © 2012 The American College of Chest Physicians Terms and Conditions