Shikonin, an Ingredient of Lithospermum erythrorhizon Induced Apoptosis in HL60 Human Premyelocytic Leukemia Cell Line - Yoon, Yoosik; Kim, Yeon-Ok; Lim, Na-Young; Jeon, Won-Kyung; Sung, Hyun Jea (Planta Medica, 1999)