Demography. Sardinia's mysterious male Methuselahs.

@article{Koenig2001DemographySM,
  title={Demography. Sardinia's mysterious male Methuselahs.},
  author={Robert M. Koenig},
  journal={Science},
  year={2001},
  volume={291 5511},
  pages={2074-6}
}