晚期产后出血常见的原因是（  ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25965' and id < 2177804 and id<>'2177804' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25965' and id > 2177804 and id<>'2177804' order by id asc limit 5