Authors: P M O'Byrne; P J Barnes; R Rodriguez-Roisin; E Runnerstrom; T Sandstrom; K Svensson; A Tattersfield Journal: Am J Respir Crit Care Med Date: 2001-10-15 Impact factor: 21.405
Authors: Romain A Pauwels; Søren Pedersen; William W Busse; Wan C Tan; Yu-Zhi Chen; Stefan V Ohlsson; Anders Ullman; Carl Johan Lamm; Paul M O'Byrne Journal: Lancet Date: 2003-03-29 Impact factor: 79.321