Maria BF Kohek*, Cassia RM Leme, Izabel T Nakamura, Suzimara A de Oliveira, Valeria Lando and Berenice B Mendonca
* Corresponding author: Maria BF Kohek kohek@usp.br
BMC Clinical Pathology 2002, 2:2 doi:10.1186/1472-6890-2-2