Dal Negro RW, Povero M. Cultural and linguistic validation of the NHQ-2 Questionnaire: a specific instrument for assessing patient’s usability of inhalation devices. Multidiscip Respir Med [Internet]. 2016 Aug. 23 [cited 2024 Jul. 7];11(1). Available from: https://mrmjournal.org/index.php/mrm/article/view/325