@misc{indiciae4b6aa38002c3,
  title = {Transformations of covariates for longitudinal data.},
  author = {Wesley K Thompson and Minge Xie and Helene R White},
  year = {2003},
  doi = {10.1093/biostatistics/4.3.353},
  url = {https://pubmed.ncbi.nlm.nih.gov/12925503/},
  note = {Source identifier: 12925503}
}