Muccino, D. R., Morice, A. H., Birring, S. S., Dicpinigaitis, P. V., Pavord, I. D., Assaid, C., Kleijn, H. J., Hussain, A., La Rosa, C., McGarvey, L., & Smith, J. A. (2020). Design and rationale of two phase 3 randomised controlled trials (Cough-1 and cough-2) of gefapixant, a P2X3 receptor antagonist, in refractory or unexplained chronic cough. ERJ Open Research, 6(4), Article 00284-2020. https://doi.org/10.1183/23120541.00284-2020