Methodological considerations for large-scale breath analysis studies: lessons from the U-BIOPRED severe asthma project

By Waqar M. Ahmed, Paul Brinkman, Hans Weda, Hugo H. Knobel, Yun Xu, Tamara M. Nijsen, Royston Goodacre, Nicholas Rattray, Teunis J. Vink, Marco Santonico, Giorgio Pennazza, Paolo Montuschi, Peter J. Sterk, Stephen J. Fowler, on behalf of the U-BIOPRED study group