@misc{indiciae3dc7706442c2,
  title = {Dropouts after first attendance.},
  author = {G H Zuk},
  year = {1986},
  doi = {10.1016/s0002-7138(09)60613-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/3950264/},
  note = {Source identifier: 3950264}
}