[1] Hosp Clin Porto Alegre, Brazilian Teratogen Informat Serv, Med Genet Serv, Ramiro Barcelos 2350, BR-90035903 Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Sch Med, Porto Alegre, RS, Brazil
[3] Univ Fed Rio Grande do Sul, Inst Biosci, Postgrad Program Genet & Mol Biol, Porto Alegre, RS, Brazil
[4] Univ Fed Rio Grande do Sul, Inst Hlth Sci, Dept Morphol Sci, Porto Alegre, RS, Brazil
[5] Hosp Clin Porto Alegre, Expt Res Ctr, Genom Med Lab, Porto Alegre, RS, Brazil
[6] Univates Univ, Sch Med, Lajeado, Brazil
[7] Minist Publ Hlth, Montevideo, Uruguay
[8] Univ Calif San Diego, Dept Pediat, San Diego, CA 92103 USA
[9] Univ Fed Rio Grande do Sul, Sch Med, Postgrad Program Child & Adolescent Hlth, Porto Alegre, Brazil