Cytotoxic Activity and Apoptosis Induction of Ethanolic Extract of Pericarps of Mangosteen (Garcinia mangostana Linn.) on WiDr Cells and Interaction Study of Alpha-mangosteen to IKK and VEGF Based on Molecular Docking - Rohmah, Annishfia Lailatur (Indonesian Society for Cancer Chemoprevention, 2013)