@misc{indiciae0529a30be9d2,
  title = {Using longitudinal data to estimate nonresponse bias.},
  author = {W F Page},
  year = {1991},
  doi = {10.1007/bf00782951},
  url = {https://pubmed.ncbi.nlm.nih.gov/1887290/},
  note = {Source identifier: 1887290}
}