PT - JOURNAL ARTICLE AU - Simpson, Catherine E. AU - Griffiths, Megan AU - Yang, Jun AU - Nies, Melanie K. AU - Vaidya, R. Dhananjay AU - Brandal, Stephanie AU - Martin, Lisa J. AU - Pauciulo, Michael W. AU - Lutz, Katie A. AU - Coleman, Anna W. AU - Austin, Eric D. AU - Ivy, D. Dunbar AU - Nichols, William C. AU - Everett, Allen D. AU - Hassoun, Paul M. AU - Damico, Rachel L. TI - <em>COL18A1</em> genotypic associations with endostatin levels and clinical features in pulmonary arterial hypertension: a quantitative trait association study AID - 10.1183/23120541.00725-2021 DP - 2022 Jan 01 TA - ERJ Open Research PG - 00725-2021 4099 - http://openres.ersjournals.com/content/early/2022/05/05/23120541.00725-2021.short 4100 - http://openres.ersjournals.com/content/early/2022/05/05/23120541.00725-2021.full