Acute toxicity studies of Croton membranaceus root extract - Asare, George A.; Sittie, A.; Bugyei, K.; Gyan, Ben A.; Adjei, Samuel; Addo, Phyllis; Wiredu, Edwin K.; Nyarko, Alex K.; Otu-Nyarko, Lydia S.; Adjei, David Nana (Journal of Ethnopharmacology, 2011)