R. . Rabello de Oliveira, J. E. . de Siqueira, and T. . Matsuo, “Evaluation of the knowledge about stem-cells by undergraduate students of courses of the health area from Universidade Estadual de Londrina – what students know and what their opinions are: DOI: 10.15343/0104-7809.200832.1.5”, Mundo Saude, vol. 32, no. 1, pp. 39–46, Jan. 2008.