@article{martin2011-21652563,
  author  = {Martin, J. L. and Hakim, A. D.},
  title   = {{Wrist actigraphy}},
  journal = {Chest},
  year    = {2011},
  doi     = {10.1378/chest.10-1872},
  pmid    = {21652563},
  url     = {https://doi.org/10.1378/chest.10-1872}
}