All data were retrieved from eligible studies independently by two authors (Ying Wang and Yuelong Huang). Data extracted from eligible studies were shown as follows: first author’s name; study publication year; investigated lncRNA; sample size; survival outcome parameter; follow-up time; hazard ratios (HR) with 95% confidence interval (95% CI); P-value. If HR and 95% CI were not directly given in the original literature, data in tables or figures were extracted. Differences of opinion were discussed with a third investigator (Peng Xiang).
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