方法采用自行设计的调查问卷对48名患者进行调查，收集资料进行分析。
Method Data were collected on 48 PRCC patients with the self-designed questionnaire and analyzed by statistical methods.
方法采用自行设计的调查问卷对48名患者进行调查，收集资料进行分析。
Method Data were collected on 48 PRCC patients with the self-designed questionnaire and analyzed by statistical methods.
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