@article{gao2007-17272290,
  author  = {Gao, S. and Jin, Y. and Hall, K. S. and Liang, C. and Unverzagt, F. W. and Ji, R. and Murrell, JR. and Cao, J. and others},
  title   = {{Selenium level and cognitive function in rural elderly Chinese}},
  journal = {American journal of epidemiology},
  year    = {2007},
  doi     = {10.1093/aje/kwk073},
  pmid    = {17272290},
  url     = {https://doi.org/10.1093/aje/kwk073}
}