Chiuman, Linda, et al. “Dermapen Treatments for Healing Pockmarked Skin in Male Wistar Rats (Rattus norvegicus): A Study Comparing Platelet-Rich Plasma With Salmon DNA Serum”. Jurnal Penelitian Pendidikan IPA, vol. 9, no. 12, Dec. 2023, pp. 10733-9, doi:10.29303/jppipa.v9i12.6000.