Mayanga-Herrera, Ana, et al. “Cytotoxic Activity of the Chloroform Fraction of Piper Aduncum and Its Effect on the Cell Cycle in Gastric Cancer Cell Lines”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 37, no. 3, July 2020, pp. 471-7, https://doi.org/10.17843/rpmesp.2020.373.5157.