Swan, F., English, A., Allgar, V., Hart, S. P., & Johnson, M. J. (2019). The hand-held fan and the Calming Hand for people with chronic breathlessness: a feasibility trial. Journal of Pain and Symptom Management, 57(6), 1051-1061.e1. https://doi.org/10.1016/j.jpainsymman.2019.02.017