Anti-Inflammatory Effects of Methanol Extract, Hexane, Ethyl Acetate, and Butanol Fraction of Piper crocatum Ruiz & Pav Leaves on Lipopolysaccharide-induced RAW 264.7 Cells, Lely, Nilda, Arifin Helmi, Aldi Yufri, and Wahyuni Fatma Sri , Pharmacognosy Journal, November 2021, Volume 13, Issue 6, p.1341-1346, (2021)