Antiamoebic and spasmolytic activities of extracts from some antidiarrhoeal traditional preparations used in Kinshasa, Congo - Tona,L.; Kambu,K.; Ngimbi,N.; Mesia,K.; Penge,O.; Lusakibanza,M.; Cimanga,K.; De Bruyne,T.; Apers,S.; Totte,J.; Pieters,L.; Vlietinck,A.J. (Phytomedicine, 2000)