4Sant' Anna AL,Garcia RC,Marzoche M,et al.Study of chronic hemolytic anaemia patients in Rio de Janeiro:prvevalence of anti-human parvovirus B19 IgG antibodies and the development aplastic crisis.Rev Inst Med Trop Sao Paulo,2002, 44(4):187-190
3Sant' Anna AL,Garcia RC,Marzoch M,et al. Study of chronic hemolytic anemia patients in Rio de Janeiro: prevalence of anti- human parvovirus B19 IgG antibodies and the development ap-lastic crisis[J]. Rev Inst Med Trop Sao Paulo,2002,44(4):187- 190.