Yulia Delfahedah. The Correlation between Knowledge Level of Young Girls and Breast Cancer Prevention in Class (X) Students at SMA Taman Siswa (TAMSIS) Pematang Siantar. Int Jou of PHE [Internet]. 2023 Apr. 3 [cited 2024 May 10];2(2):496-9. Available from: https://ejournal.ipinternasional.com/index.php/ijphe/article/view/362