RT Journal Article SR Electronic T1 A 44-year-old, Caucasian, male nonsmoker with worsening difficulty in breathing and decreased exercise tolerance JF Breathe JO Breathe FD European Respiratory Society SP 117 OP 122 DO 10.1183/20734735.001317 VO 13 IS 2 A1 Sunita Rai A1 Alina Andreea Ionescu YR 2017 UL http://breathe.ersjournals.com/content/13/2/117.abstract AB