Doe, Gillian, Clanchy, Jill, Wathall, Simon, Barber, Shaun, Edwards, Sarah, Evans, Helen, Jackson, Darren, Armstrong, Natalie, Steiner, Michael, Evans, Rachael A, "Investigating a structured diagnostic approach for chronic breathlessness in primary care: a mixed-methods feasibility cluster randomised controlled trial", BMJ Open Respiratory Research, 2025