Stenfors, Nikolai http://orcid.org/0000-0002-1684-1301
Persson, Hampus
Tutt, Alasdair
Tufvesson, Ellen
Andersson, Erik P.
Ainegren, Mats
Hanstock, Helen G.
Funding for this research was provided by:
HeartLungFoundation (20190261)
Region Jämtland Härjedalen (JLL-931753)
Gunhild och Assar Karlssons donationsfond (2019)
Umea University
Article History
Received: 14 December 2021
Accepted: 22 March 2022
First Online: 7 April 2022
Declarations
:
: After being approached by the authors, Vapro produktutveckling AB supplied the HME masks and filters for use in the study without charge. Otherwise, the authors have no conflicts of interest to declare.
: The study was approved by the Umeå Regional Ethics Review Board (Dnr: 2018-419-31) and conducted in accordance with the Declaration of Helsinki.
: Participants provided written, informed consent to participate in the study.