ONYINYE, D.-W.; KALU, U. I.; MARTHA, A. .; U, N. D. . Analysis of Inequality in Healthcare Utilization among Pregnant Women in Nigeria: Concentration Index Approach. International Journal of Asian Social Science, [S. l.], v. 7, n. 5, p. 424–433, 2017. DOI: 10.18488/journal.1.2017.75.424.433. Disponível em: https://archive.aessweb.com/index.php/5007/article/view/2892. Acesso em: 23 nov. 2024.