RT Journal Article SR Electronic T1 COL18A1 genotypic associations with endostatin levels and clinical features in pulmonary arterial hypertension: a quantitative trait association study JF ERJ Open Research JO erjor FD European Respiratory Society SP 00725-2021 DO 10.1183/23120541.00725-2021 VO 8 IS 2 A1 Simpson, Catherine E. A1 Griffiths, Megan A1 Yang, Jun A1 Nies, Melanie K. A1 Vaidya, Dhananjay A1 Brandal, Stephanie A1 Martin, Lisa J. A1 Pauciulo, Michael W. A1 Lutz, Katie A. A1 Coleman, Anna W. A1 Austin, Eric D. A1 Ivy, D. Dunbar A1 Nichols, William C. A1 Everett, Allen D. A1 Hassoun, Paul M. A1 Damico, Rachel L. YR 2022 UL http://openres.ersjournals.com/content/8/2/00725-2021.abstract AB