Data quality, cancer burden, and disparities in oncology care reported in Kinshasa, Democratic Republic of Congo: a retrospective longitudinal descriptive observational study of data from the National Health Information System from 2017 to 2025. SJHR-Africa [Internet]. 2026 Jun. 24 [cited 2026 Aug. 2];7(2):16. Available from: https://www.sjhrafrica.org.sjhresearchafrica.org/index.php/public-html/article/view/2616