RT Journal Article SR Electronic T1 Pneumonia and hypercapnic respiratory failure JF Breathe JO Breathe FD European Respiratory Society SP e117 OP e121 DO 10.1183/20734735.0169-2019 VO 15 IS 3 A1 Gusts Ancans A1 Dace Zentina A1 Zaiga Kravale YR 2019 UL http://breathe.ersjournals.com/content/15/3/e117.abstract AB