@misc{indiciaef2bc3bdf94bf,
  title = {Students as tutors in problem-based learning: does it work?},
  author = {M L Johansen and D F Martenson and J Bircher},
  year = {1992},
  doi = {10.1111/j.1365-2923.1992.tb00143.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1565034/},
  note = {Source identifier: 1565034}
}