Houeninvo HG, Assouto AB. Exploring the relationship between healthcare expenditure, income, medical technology, and aging: A pooled mean group analysis of African countries. 5009 [Internet]. 2023 Jun. 5 [cited 2024 Apr. 28];11(2):56-74. Available from: http://archive.aessweb.com/index.php/5009/article/view/4811