@article{Meira-Machado2009,
author = {Meira-Machado, L.M. and de Uña-Álvarez, J. and Cadarso-Suárez, C. and Andersen, P.K.},
title= {Multi-state models for the analysis of time-to-event data},
year = {2009},
doi = {10.1177/0962280208092301},
journal = {Statistical Methods in Medical Research},
volume = {18},
number = {2},
pages = {195--222},
}