@misc{indiciae158c52fa0233,
  title = {[Gaining access--recruitment phase as a challenge].},
  author = {Iren Bischofberger and Brigit Obrist van Eeuwijk},
  year = {2005},
  doi = {10.1024/1012-5302.18.4.219},
  url = {https://pubmed.ncbi.nlm.nih.gov/16128172/},
  note = {Source identifier: 16128172}
}