Hepatoprotective and Free Radical Scavenging Activities of Prenylflavonoids, Coumarin, and Stilbene from Morus alba - Oh, Hyuncheol; Ko, Eun-Kyung; Jun, Jung-Yang; Oh, Myung-Hoon; Park, Sung-Uk; Kang, Ki-Hong; Lee, Ho-Sub; Kim, Youn-Chul (Planta Medica, 2002)