@misc{indiciae22fdecb62de8,
  title = {Comorbidity and smoking.},
  author = {J R Hughes},
  year = {1999},
  doi = {10.1080/14622299050011981},
  url = {https://pubmed.ncbi.nlm.nih.gov/11768173/},
  note = {Source identifier: 11768173}
}