Comment on: Temporal artery compression sonography for the diagnosis of giant cell arteritis in elderly patients with acute ocular arterial occlusions: reply. (18th January 2021) - Czihal, Michael; Köhler, Anton; Lottspeich, Christian; Prearo, Ilaria; Hoffmann, Ulrich; Schulze-Koops, Hendrik; Priglinger, Siegfried; Mackert, Marc; Dechant, Claudia