[1] Fed Univ Para, Hosp Univ Joao de Barros Barreto, Nucleo Pesquisas Oncol, 2 Piso UNACON,Av Mundurucus, BR-66073000 Belem, PA, Brazil
[2] Univ Fed Sao Paulo, Dept Morfol & Genet, Disciplina Genet, BR-04021001 Sao Paulo, Brazil
[3] Fed Univ Para, Lab Citogenet Humana, Inst Ciencias Biol, BR-66073000 Belem, PA, Brazil