另一种则是大自然制造出来的，它能感染人类。
结论孕妇TORCH感染是自然流产的重要原因。
Conclusions TORCH infection is the important cause of natural abortion.
目的：探讨人细小病毒B19感染与自然流产之间的关系。
Objective: To determine whether there is a relationship between parvovirus B19 infection and spontaneous abortion.
目的：探讨人细小病毒B19感染与自然流产之间的关系。
Objective: To determine whether there is a relationship between parvovirus B19 infection and spontaneous abortion.
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