MTOR and cancer: Sun, R. Zhai, C. Ma, and W. Miao, "Combination of Aloin and Metformin Enhances the Antitumor Effect by Inhibiting the Growth and Invasion and Inducing Apoptosis and Autophagy in Hepatocellular Carcinoma Through PI3K/AKT/mTOR Pathway," Cancer Medicine 9, no. 3 (2020): 1141-1151, https://doi.org/10.1002/cam4.2723.