@article{knopman2021-33074304,
  author  = {Knopman, D. S. and Lundt, E. S. and Therneau, T. M. and Albertson, S. M. and Gunter, J. L. and Senjem, M. L. and Schwarz, C. G. and Mielke, M. M. and others},
  title   = {{Association of Initial β-Amyloid Levels With Subsequent Flortaucipir Positron Emission Tomography Changes in Persons Without Cognitive Impairment}},
  journal = {JAMA neurology},
  year    = {2021},
  doi     = {10.1001/jamaneurol.2020.3921},
  pmid    = {33074304},
  url     = {https://doi.org/10.1001/jamaneurol.2020.3921}
}