女性，30岁。右肾结石行体外震波碎石3 天后排出结石。两周复查右肾结石已排净， 结石成分分析为磷酸盐结石。此后应采取 的预防方法是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32572' and id < 2589116 and id<>'2589116' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32572' and id > 2589116 and id<>'2589116' order by id asc limit 5