D, Upendran Nagappan, et al. “Serum Ghrelin Levels and Their Association With Demographic and Clinical Characteristics Among Patients With Moderate Acne Vulgaris: An Analytical Cross-Sectional Study”. Adolescência E Saúde, Oct. 2026, pp. 379-86, https://adolescenciaesaude.com/index.php/aes/article/view/2519.