18F-Fluorodeoxyglucose Positron Emission Tomography for Estimating Outcomes After Initial Treatment for Metastatic Breast Cancer: A Nonrandomized Clinical Cohort Trial. - van Geel JJL; Eisses B; Elias SG; Brouwers AH; Bensch F; Gerritse SL; Angus L; Glaudemans AWJM; Kuip EJM; Jager A; Oprea-Lager DE; Vugts DJ; et al. (JAMA oncology, 2026)