Cytotoxic flavonoids from the stem bark of Lonchocarpus aff. fluvialis - Blatt, C TT; Chávez, D; Chai, H B; Graham, J G; Cabieses, F; Farnsworth, N R; Cordell, G A; Pezzuto, J M; Kinghorn, A D (Phytother Res, 2002)