@misc{indiciae0ccd44809d58,
  title = {Ecological effects in multi-level studies.},
  author = {T A Blakely and A J Woodward},
  year = {2000},
  doi = {10.1136/jech.54.5.367},
  url = {https://pubmed.ncbi.nlm.nih.gov/10814658/},
  note = {Source identifier: 10814658}
}