Income and literacy: Understanding the dilemmas and beliefs in marketability of orthodox healthcare products. Singaporean Journal of Business Economics and Management, [S. l.], v. 12, n. 4, p. 129–136, 2026. DOI: 10.68359/sjbem.650.412026. Disponível em: https://www.singaporeanjbem.com/index.php/SJBEM/article/view/650. Acesso em: 23 oct. 2026.