Authors: Kathleen Belanger; Janneane F Gent; Elizabeth W Triche; Michael B Bracken; Brian P Leaderer Journal: Am J Respir Crit Care Med Date: 2005-10-27 Impact factor: 21.405
Authors: Philippa Howden-Chapman; Nevil Pierse; Sarah Nicholls; Julie Gillespie-Bennett; Helen Viggers; Malcolm Cunningham; Robyn Phipps; Mikael Boulic; Pär Fjällström; Sarah Free; Ralph Chapman; Bob Lloyd; Kristin Wickens; David Shields; Michael Baker; Chris Cunningham; Alistair Woodward; Chris Bullen; Julian Crane Journal: BMJ Date: 2008-09-23