RT Journal Article SR Electronic T1 Clinical implications of ANCA positivity in idiopathic pulmonary fibrosis patients JF Breathe JO Breathe FD European Respiratory Society SP 190321 DO 10.1183/20734735.0321-2019 VO 16 IS 1 A1 Guillermo Suarez-Cuartin A1 Maria Molina-Molina YR 2020 UL http://breathe.ersjournals.com/content/16/1/190321.abstract AB