<qa>  What is the name of the screening tool for women aged 50-69 years?Compare synthetic mammographydigital breast tomosynthesis SMDBT with digital mammography DM as a screening tool for women aged 50-69 years, invited to participate in the Norwegian Breast Cancer Screening Program at the screening unit in Bergen, Norway, with regard to early performance measures, including prognostic and predictive tumor characteristics, radiation doses and cost-effectiveness. 