@misc{indiciae77068ff109db,
  title = {Chronic hypercapnia during methadone maintenance.},
  author = {C E Marks and R M Goldring},
  year = {1973},
  doi = {10.1164/arrd.1973.108.5.1088},
  url = {https://pubmed.ncbi.nlm.nih.gov/4746566/},
  note = {Source identifier: 4746566}
}