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Faridah BD FB, Saputri LA, Fitriah IP, Rahmawati L, Oktavia NS, Armin F. Formulation and evaluation of antibacterial activity of hand sanitizers containing red betel (Piper crocatum) and white galangal (Alpinia galanga) extract. medisians [Internet]. 2024 May 1 [cited 2025 Jun. 22];22(1):20-6. Available from: http://jurnalnasional.ump.ac.id/index.php/medisains/article/view/21357