Rokhana R. The Effectiveness of Antibacterial Red Betel (Piper crocatum) Formulation in Hand Sanitizer Gel for Inhibiting The Growth Bacterial Staphylococcus aureus and Esherichia coli. MJHS [Internet]. 2023 Mar. 23 [cited 2024 Nov. 24];2(1):121-8. Available from: https://jurnal.iakmikudus.org/article/view/67