Serum Haptoglobin, Ceruloplasmin and CRP levels: Markers of Diabetic Retinopathy. Global Journal of Medical Research, [S. l.], v. 12, n. 6, p. 7–9, 2012. Disponível em: https://medicalresearchjournal.org/index.php/GJMR/article/view/251. Acesso em: 1 feb. 2026.