Noviello, Mauricio B. et al. Inter- and intraobserver variability in the assessment of tumor grade and lymphovascular space invasion in patients with squamous cell carcinoma of the cervix. European Journal of Obstetrics & Gynecology and Reproductive Biology. Amsterdam: Elsevier B.V., v. 138, n. 2, p. 246-248, 2008. Available at: <http://hdl.handle.net/11449/12131>.