論文（英文）
Adjustment of Conditional Bias in Hazard Ratios for Group Sequential Testing of Progression-Free Survival and Overall Survival
Izumi S, Nomura S, Matsuyama Y. Adjustment of Conditional Bias in Hazard Ratios for Group Sequential Testing of Progression-Free Survival and Overall Survival. Stat Med. 2025;44(10–12):e70112.