Antioxidative and anticancer effects of Tacca chantrieri extract enhancing cisplatin sensitivity in cholangiocarcinoma cells - Napat Armartmuntree; Yingpinyapat Kittirat; Bundit Promraksa; Watcharin Loilome; Hasaya Dokduang; Anchalee Techasen; Pahol Sansomchai; Malinee Thanee; Thomas O’Connor; Phutthida Kongthitilerd; Sureerat Padthaisong (PLoS ONE)