@article{guralnik1994,
  title={A Short Physical Performance Battery Assessing Lower Extremity Function: Association With Self-Reported Disability and Prediction of Mortality and Nursing Home Admission},
  author={Jack M. Guralnik and E. M. Simonsick and Luigi Ferrucci and Robert J. Glynn and Lisa Berkman and Dan G. Blazer and Paul A. Scherr and Robert B. Wallace},
  year={1994},
  journal={Journal of Gerontology},
  doi={10.1093/geronj/49.2.m85},
  url={https://doi.org/10.1093/geronj/49.2.m85}
}