RETRACTED: Hsia et al. Maslinic Acid Induces Mitochondrial Apoptosis and Suppresses HIF-1α Expression in A549 Lung Cancer Cells under Normoxic and Hypoxic Conditions. Molecules 2014, 19, 19892-19906. - Hsia TC; Liu WH; Qiu WW; Luo J; Yin MC (Molecules (Basel, Switzerland), 2025)