Aghajani Delavar, M. , , Zargari, N. , , Khoshnezhad, H. , , Jafarnejad, S. , and Javid, A. . "Exploring the Correlation between Serum Vitamin D Levels and Cancer Stage and Grading in Pediatric Patients", Journal of Pediatric Perspectives, 12, 11, 2024, 19152-19157. doi: 10.22038/jpp.2024.80999.5463