DR. SUMITOJ SINGH. STUDY OF SERUM VITAMIN D3 LEVELS AND RISK OF BREAST CANCER. International Journal of Medical Science And Diagnosis Research, [S. l.], v. 4, n. 4, 2020. Disponível em: https://www.ijmsdr.com/index.php/ijmsdr/article/view/559. Acesso em: 20 jun. 2026.