McCormack, Ciara ORCID: 0000-0003-4508-5522, Kehoe, BrĂ³na ORCID: 0000-0003-4552-0555, Harcastle, Sarah, McCaffery, Noel ORCID: 0000-0003-0950-2157, McCarren, Andrew ORCID: 0000-0002-7297-0984, Gaine, Sean, McCullagh, Brian and Moyna, Niall ORCID: 0000-0003-1061-8528 (2021) Pulmonary hypertension and homebased (PHAHB) exercise intervention: protocol for a feasibility study. British Medical Journal (BMJ), 11 (5). ISSN 0959-8138