@misc{indiciae180f2b35fedb,
  title = {frailtypack: a computer program for the analysis of correlated failure time data using penalized likelihood estimation.},
  author = {Virginie Rondeau and Juan R Gonzalez},
  year = {2005},
  doi = {10.1016/j.cmpb.2005.06.010},
  url = {https://pubmed.ncbi.nlm.nih.gov/16144730/},
  note = {Source identifier: 16144730}
}