In vivo reversal of P-glycoprotein-mediated drug resistance in a breast cancer xenograft and in leukemia models using a novel, potent, and nontoxic epicatechin EC31 - Sun, W; Wong, I LK; Law, H KW; Su, X; Chan, T CF; Sun, G; Yang, X; Wang, X; Chan, T H; Wan, S; Chow, L MC (Int J Mol Sci, 2023)