@misc{indiciaee497301933c0,
  title = {Retention in a low-threshold methadone maintenance program.},
  author = {M Torrens and C Castillo and V Pérez-Solá},
  year = {1996},
  doi = {10.1016/0376-8716(96)01230-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/8793310/},
  note = {Source identifier: 8793310}
}