为了明确非剖宫产产妇晚期产后出血的原 因，最好的诊断方法是(       )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26892' and id < 2236358 and id<>'2236358' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26892' and id > 2236358 and id<>'2236358' order by id asc limit 5