Rafael E. Andrade, MD
Department of Pathology University Hospital Fundacion Santafe de Bogota Calle 119 No 9-33 Bogota, Colombia, S.A.
Ph: 57-1-6030303 ext. 5233/5238/5239 Fax: 57-1-6575712 e-mail: reandradep@unal.edu.co