1. Department of Pediatrics, University of Arkansas for Medical Sciences, and Pediatric Aerosol Research Laboratory at Arkansas Children's Research Institute, Little Rock, Arkansas.
2. Department of Respiratory Therapy, Georgia State University, Atlanta, Georgia.
3. Department of Respiratory Paediatrics, Royal Hospital for Children, Glasgow, United Kingdom.
4. Aerogen Pharma Corp., San Mateo, California.
5. Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada.
6. Institut de Recherche Expérimentale et Clinique (IREC), Pôle de Pneumologie, ORL & Dermatologie, Université Catholique de Louvain, Brussels, Belgium.
7. Department of ENT-Head & Neck Surgery, London North West Healthcare NHS Trust, London, United Kingdom.