Punsmann, Stefanie
van der Graaf, Tim
Zahradnik, Eva
Czibor, Christina
Raulf, Monika
Sander, Ingrid
Article History
Received: 16 January 2019
Accepted: 2 April 2019
First Online: 29 April 2019
Conflict of interest
: IPA received a grant for performing this study by Philips Innovation Team Air, Royal Philips, Drachten, The Netherlands. T. van der Graaf is an employee of Philips Innovation Team Air. M. Raulf received honorarium for lectures on scientific meetings from HAL Allergy, ThermoFisher Scientific and Astellas. S. Punsmann, E. Zahradnik, C. Czibor and I. Sander declare that they have no competing interests.