[1] Guys & St Thomas NHS Fdn Trust, Royal Brompton Hosp, Pulm Hypertens Serv, London, England
[2] Guys & St Thomas NHS Fdn Trust, Royal Brompton Hosp, Dept Congenital Heart Dis & Pulm Hypertens, London, England
[3] Guys & St Thomas NHS Fdn Trust, Dept Resp Med, London, England
[4] Guys & St Thomas NHS Fdn Trust, London, England
[5] Guys & St Thomas NHS Fdn Trust, Royal Brompton Hosp, London, England
[6] Guys & St Thomas NHS Fdn Trust, Royal Brompton Hosp, Dept Radiol, London, England
[7] Guys & St Thomas NHS Fdn Trust, Royal Brompton Hosp, Dept Echocardiog, London, England
[8] Guys & St Thomas NHS Fdn Trust, Adult Congenital Heart Dis Serv, London, England
[9] Guys & St Thomas NHS Fdn Trust, Intens Care Unit, London, England
[10] Guys & St Thomas NHS Fdn Trust, Pulm Hypertens Serv, London, England
[11] NHS Fdn Trust, Kings Coll Hosp, Dept Resp Med, London, England
[12] Guys & St Thomas NHS Fdn Trust, Royal Brompton Hosp, Pulm Hypertens, London, England