1. Research scientists and graduate student, respectively, Genetic Department, Federal University of Pernambuco, 79 apt. 804, Boa Viagem, 51210-020, Recife, PE, BR.
2. Research scientist of the Medicine Faculty in Ribeirão Preto, São Paulo University, BR.
3. Genetics Department, Biological Science Center, Federal University of Pernambuco, BR.