Professional-organization profile: www.navbo.org/2017/05/01/karen-hirschi-phd/ . Dated 1 May 2017. Names Karen K. Hirschi and describes vascular biology research. Full author byline in the same team’s follow-up labs.utsouthwestern.edu/sites/default/files/2022-11/23_Niklason_JVS.pdf , printed p. 628, verifies Karen K. Hirschi in the artery-engineering collaboration.