What is the Relationship Between Time in Range, Time in Tight Range, and HbA1c in Youth and Young Adults With Type 1 Diabetes? Results From the German/Austrian/Luxembourgian/Swiss Diabetes Prospective Follow-Up Registry. - Burckhardt MA; Auzanneau M; Rosenbauer J; Binder E; Weiskorn J; Hess M; Klinkert C; Mirza J; Zehnder LS; Wenzel S; Placzek K; Holl RW (Journal of diabetes science and technology, 2026)