@article{Perls2002,
author = {Perls, T.T. and Wilmoth, J. and Levenson, R. and Drinkwater, M. and Cohen, M. and Bogan, H. and Joyce, E. and Brewster, S. and Kunkel, L. and Puca, A.},
title= {Life-long sustained mortality advantage of siblings of centenarians},
year = {2002},
doi = {10.1073/pnas.122587599},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
volume = {99},
number = {12},
pages = {8442--8447},
}