Degalactotigonin, a Natural Compound from <i>Solanum nigrum L</i> ., Inhibits Growth and Metastasis of Osteosarcoma through GSK3β Inactivation–Mediated Repression of the Hedgehog/Gli1 PathwayZhiqiang Zhao, Jingnan Shen|Clinical Cancer Research|2017Cited by 76