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Ndlovu BD, Melesse SF, Zewotir T. A nonparametric vertical model: An application to discrete time competing risks data with missing failure causes. SASJ [Internet]. 2020 Sep. 30 [cited 2026 Jun. 13];54(2):231-4. Available from: https://ngtt.journals.ac.za/index.php/sasj/article/view/4992