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title_diff: "[{\"diffs\":[[1,\"研究方法\"]],\"start1\":0,\"start2\":0,\"length1\":0,\"length2\":4}]"
body_diff: "[{\"diffs\":[[1,\"# 研究方法\\\n## 相关性\\\n## Cox单因素\\\n## Cox生存分析\\\n## Logistic回归分析\\\n## 生存分析\\\n## ROC AUC\\\n\"]],\"start1\":0,\"start2\":0,\"length1\":0,\"length2\":70}]"
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