在探索慢性非传染性疾病病因的过程中，下列方法最具有证实病因的效果的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25503' and id < 2146900 and id<>'2146900' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25503' and id > 2146900 and id<>'2146900' order by id asc limit 5