1. Departments of Internal Medicine (F.C.A., N.T., A.C.M., M.C.), School of Medicine of Ribeirao Preto, University of Sao Paulo, 14049-900 Ribeirao Preto, SP, Brazil
2. Pathology (F.S., L.N.), School of Medicine of Ribeirao Preto, University of Sao Paulo, 14049-900 Ribeirao Preto, SP, Brazil
3. Surgery and Anatomy (H.R.M.), School of Medicine of Ribeirao Preto, University of Sao Paulo, 14049-900 Ribeirao Preto, SP, Brazil
4. Genetics (W.A.S.), School of Medicine of Ribeirao Preto, University of Sao Paulo, 14049-900 Ribeirao Preto, SP, Brazil