1. British Thoracic Society guidelines for the management of community acquired pneumonia in childhood;British Thoracic Society;Thorax,2002
2. Community Acquired Pneumonia Guideline Team, Cincinnati Children's Hospital Medical Center Evidence-based care guideline for medical management of Community Acquired Pneumonia in children 60 days to 17 years of age 2005 http://www.cincinnatichildrens.org/svc/alpha/h/health-policy/ev-based/pneumonia.htm
3. Community-acquired pneumonia in infants and children;Ostapchuk;Am Fam Physician,2004
4. Observer variation in chest radiography of acute lower respiratory infections in children: a systematic review;Swingler;BMC Med Imaging,2001
5. Cohen's and Fleiss's Kappa program concordance in ordinal data http://www.stattools.net/CohenKappa_Pgm.php