@misc{indiciaed50586c2ec9f,
  title = {Can evaluation studies benefit from triangulation? A case study.},
  author = {Elske Ammenwerth and Carola Iller and Ulrich Mansmann},
  year = {2003},
  doi = {10.1016/s1386-5056(03)00059-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/12909175/},
  note = {Source identifier: 12909175}
}