学会発表（国際）
A stochastic curtailment method based on the widthed log-rank test for delayed treatment effects.
Yoshida M, Matsuyama Y. A stochastic curtailment method based on the widthed log-rank test for delayed treatment effects. XXVIth International Biometrics Conference 2012, Kobe, Japan. August 26 - 31, 2012. Abstract P-3-8.