@misc{indiciae8425a633d82d,
  title = {Sampling for qualitative research.},
  author = {M N Marshall},
  year = {1996},
  doi = {10.1093/fampra/13.6.522},
  url = {https://pubmed.ncbi.nlm.nih.gov/9023528/},
  note = {Source identifier: 9023528}
}