3Torok TJ, et al: Prenatal Diagnsis of Intrauterine Infection with Parvovirus B19 by the polymerase Chain Reaction Technique Clinical Infetious Disease[J], 1992; 14 : 149 - 55.
4Brown T, et al: Intrauterine parvovirus infection associated with hydrops fetalis (Lettter) [J], lancet, 1984, 2 : 1033 - 4.
5Tolfvenstam T,Papadogiannakis N,Norbeck O,et al.Frequency of human parvovirus B19 infection in intrauterine fetal death [J].Lancet,2001,357 (9267):1494-7.
6Young NS.Parvovirus infection and its treatment [J].Cli Exp Immunol,1996,104(9):26-30.
7Adler SP,Manganello A-MA,Koch WC,et al.Risk of human parvovirus B19 in fection among school and hospital employees during endemic peviods [J].Infect Dis,1993,168(2):361.