OMERACT GCA phantom project: validation of a 3D-printed ultrasound training phantom for diagnosis of giant cell arteritis - Schremmer, Tobias; Dejaco, Christian; Recker, Florian; Aschwanden, Markus; Boumans, Dennis; Bruyn, George A; Chrysidis, Stavros; Daikeler, Thomas; Nielsen, Berit; De Miguel, Eugenio; Diamantopoulos, Andreas P; Dohn, Uffe Moller; et al. (Rmd Open, 2025)