Rob Mac Sweeney (Belfast, Northern Ireland) hosts a panel discussion including Prof Paul Checchia (Houston, USA), Prof Wes Diddle (Washington DC, USA), Prof Ranjit Lall (Coventry, England), Prof Kathy Rowan (London, England), as well as the NITRIC trial chief investigator Luregn Schlapbach (Zurich, Switzerland) and editorialist Prof Mark Peters (London, England)