RT Journal Article SR Electronic T1 Angel's wing appearance on chest radiograph – progressive massive fibrosis JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 307 OP 307 DO 10.7861/clinmedicine.15-3-307 VO 15 IS 3 A1 Sabarish Narayanasamy A1 Jitender Singh A1 Paul Anton Reymond Prakash Sathiadoss A1 Mohammad Saud Khan A1 Faisal Jamal A1 Nuzhat Zaman YR 2015 UL http://www.rcpjournals.org/content/15/3/307.abstract