临床覆膜支架最常用于下列哪个部位狭窄/梗阻患者：

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24724' and id < 2117759 and id<>'2117759' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24724' and id > 2117759 and id<>'2117759' order by id asc limit 5