Authors: Sharon Mitchell; Anita Simonds; Stefan Andreas; Maria R Bonsignore; Brendan Cooper; Viliam Donic; Walter T McNicholas; Mary Morrell; Paolo Palange; Gianni Prest; Renata Riha; Ha Trang; Winfried Randerath; Chris van der Grinten; Johan Verbraecken; Wilfried de Backer Journal: Breathe (Sheff) Date: 2015-03