[1] Univ Fed Rio Grande do Sul, Inst Biociencias, Dept Genet, BR-91501970 Porto Alegre, RS, Brazil
[2] Hosp Clin Porto Alegre, Unidade Epidemiol & Estat, Porto Alegre, RS, Brazil
[3] Arizona State Univ, Sch Human Evolut & Social Change, Tempe, AZ USA
[4] Univ Estadual Maringa, Dept Anal Clin, Maringa, PR, Brazil
[5] Univ Fed Parana, Dept Genet, BR-80060000 Curitiba, PR, Brazil