Mitchell, Garrod, Clark, Douiri, Parker, Ellis, Fowler, Ludlow, Hull, Chung, Lee, Bellas, Pandyan, Birring, 2016. Physiotherapy, and speech and language therapy intervention for patients with refractory chronic cough: a multicentre randomised control trial 72.. https://doi.org/10.1136/thoraxjnl-2016-208843