Brunekreef Bert, Künzli Nino, Pekkanen Juha, Annesi-Maesano Isabella, Forsberg Bertil, Sigsgaard Torben, Keuken Menno, Forastiere Francesco, Barry Maeve, Querol Xavier, Harrison Roy M
Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht, The Netherlands
Swiss Tropical and Public Health Institute, Basel, Switzerland University of Basel, Basel, Switzerland.
Eur Respir J. 2015 Jan;45(1):7-10. doi: 10.1183/09031936.00186114.