RT Journal Article SR Electronic T1 Fentanyl nasal spray in a patient with end-stage COPD and severe chronic breathlessness JF Breathe JO Breathe FD European Respiratory Society SP e122 OP e125 DO 10.1183/20734735.0183-2019 VO 15 IS 3 A1 Janssen, Daisy J.A. A1 van den Beuken-van Everdingen, Marieke H.J. A1 Verberkt, Cornelia A. A1 Creemers, Jacques P.H.M. A1 Wouters, Emiel F.M. YR 2019 UL http://breathe.ersjournals.com/content/15/3/e122.abstract AB