BARR, H.L., HALLIDAY, N., BARRETT, D.A., WILLIAMS, P., FORRESTER, D.L., PECKHAM, D., WILLIAMS, K., SMYTH, A.R., HONEYBOURNE, D., L. WHITEHOUSE, J., NASH, E.F., DEWAR, J., CLAYTON, A., KNOX, A.J., C脕MARA, M. and FOGARTY, A.W., 2017. Journal of Cystic Fibrosis. 16(2), 230-238