[1] Hosp Sirio Libanes, Hosp Menino Jesus, Grp Hepatol & Transplante Pediat, Sao Paulo, SP, Brazil
[2] Hosp Base Dist Fed, Hosp Crianca Brasilia, Brasilia, DF, Brazil
[3] Univ Beira Interior, Fac Ciencias Saude, Ctr Pesquisa Ciencias Saude CICS, Covilha, Portugal
[4] Univ Beira Interior, Ctr Matemat & Aplicacoes, Dept Matemat, Covilha, Portugal
[5] Hosp Base Dist Fed, Hosp Crianco Brasilia, Dept Gastroenterol Pediat, Brasilia, DF, Brazil
[6] Univ Fed Minas Gerais, Dept Gastroenterol & Hepatol Pediat, Belo Horizonte, MG, Brazil
[7] Hosp Santo Antonio, Dept Gastroenterol & Hepatol Pediat, Porto Alegre, RS, Brazil
[8] Univ Fed Bahia UFBA, Dept Gastroenterol & Hepatol Pediat, Salvador, BA, Brazil
[9] Univ Estadual Campinas, UNICAMP, Dept Gastroenterol & Hepatol Pediat, Campinas, SP, Brazil
[10] Univ Sao Paulo, FMRP, Dept Gastroenterol & Hepatol Pediat, Ribeirao Preto, SP, Brazil
[11] Univ Fed Rio Grande do Sul, Dept Gastroenterol Pediat, Porto Alegre, RS, Brazil
[12] Univ Estado Rio De Janeiro, Dept Gastroenterol Pediat, Rio De Janeiro, RJ, Brazil
[13] Hosp Fed Servidores Estado, Rio De Janeiro, RJ, Brazil
[14] Univ Fed Rio de Janeiro, Dept Gastroenterol & Hepatol Pediat, Rio de Janeiro, Brazil
[15] Univ Fed Sergipe, Dept Gastroenterol & Hepatol Pediat, Sao Cristovao, SE, Brazil
[16] Irmandade Santa Casa Misericordia Sao Paulo, Dept Gastroenterol & Hepatol Pediat, Sao Paulo, SP, Brazil
[17] Univ Fed Paraiba UFPB, Dept Gastroenterol & Hepatol Pediat, Joao Pessoa, Paraiba, Brazil
[18] Hosp Infantil Joana Gusmao, Dept Gastroenterol & Hepatol Pediat, Florianopolis, SC, Brazil
[19] Univ Fed Mato Grosso do Sul UFMS, Dept Gastroenterol & Hepatol Pediat, Campo Grande, MS, Brazil
[20] Univ Fed Rio Grande do Norte UFRN, Dept Gastroenterol & Hepatol Pediat, Natal, RN, Brazil