@misc{indiciaef66c2b728e2e,
  title = {Sampling for qualitative research using quantitative methods. 1. Measuring GPs' attitudes towards discussing smoking with patients.},
  author = {T Coleman and M Williams and A Wilson},
  year = {1996},
  doi = {10.1093/fampra/13.6.526},
  url = {https://pubmed.ncbi.nlm.nih.gov/9023529/},
  note = {Source identifier: 9023529}
}