@misc{indiciae8b820ca9b2a0,
  title = {Study types and study issues in clinical medicine.},
  author = {Michael Koller and Wilfried Lorenz},
  year = {2006},
  doi = {10.1016/j.forsciint.2006.05.010},
  url = {https://pubmed.ncbi.nlm.nih.gov/16806775/},
  note = {Source identifier: 16806775}
}