@article{Heagerty2005,
author = {Heagerty, P.J.  and Zheng, Y. },
title= {Survival model predictive accuracy and ROC curves},
year = {2005},
doi = {10.1111/j.0006-341X.2005.030814.x},
volume = {61},
number = {1},
pages = {92--105},
}