Thompson, R.C., Lymbery, A.J., Pearce, D.A., Finn, K.C., Reynoldson, J.A., Meloni, B.P. (1996)Giardia duodenalis: exposure to metronidazole inhibits competitive interactions between isolates of the parasite in vitro, J Parasitol. , 82(4), pp. 679-83.