@misc{indiciae33839edee2ad,
  title = {Problems in doing nursing research. Control by constancy: will it work in clinical research?},
  author = {A S Hinshaw},
  year = {1979},
  doi = {10.1177/019394597900100224},
  url = {https://pubmed.ncbi.nlm.nih.gov/258019/},
  note = {Source identifier: 258019}
}