Martinsen, E. M.; Eagan, T. M.; Leiten, E. O.; Nordeide, E.; Bakke, P. S.; Lehmann, S.; Nielsen, R. Motivation and Response Rates in Bronchoscopy Studies. Multidiscip Respir Med 2019, 14 (1). https://doi.org/10.4081/mrm.2019.16.