Authors: Manjith Narayanan; John Owers-Bradley; Caroline S Beardsmore; Marius Mada; Iain Ball; Ruslan Garipov; Kuldeep S Panesar; Claudia E Kuehni; Ben D Spycher; Sian E Williams; Michael Silverman Journal: Am J Respir Crit Care Med Date: 2011-10-27 Impact factor: 21.405