RT Journal Article SR Electronic T1 COVID-19 in pulmonary arterial hypertension and chronic thromboembolic pulmonary hypertension: a reference centre survey JF ERJ Open Research JO erjor FD European Respiratory Society SP 00520-2020 DO 10.1183/23120541.00520-2020 VO 6 IS 4 A1 Catharina Belge A1 Rozenn Quarck A1 Laurent Godinas A1 David Montani A1 Pilar Escribano Subias A1 Jean-Luc VachiƩry A1 Heba Nashat A1 Joanna Pepke-Zaba A1 Marc Humbert A1 Marion Delcroix YR 2020 UL http://openres.ersjournals.com/content/6/4/00520-2020.abstract AB