Zerumbone, a sesquiterpene in subtropical ginger, suppresses skin tumor initiation and promotion stages in ICR mice - Murakami,A.; Tanaka,T.; Lee,J.Y.; Surh,Y.J.; Kim,H.W.; Kawabata,K.; Nakamura,Y.; Jiwajinda,S.; Ohigashi,H. (Int J Cancer, 2004)