@misc{indiciaee44792f96bed,
  title = {Practice variations by population: training significance.},
  author = {R D Feigin and J E Drutz and E O Smith and C R Collins},
  year = {1996},
  url = {https://pubmed.ncbi.nlm.nih.gov/8692615/},
  note = {Source identifier: 8692615}
}