@article{Ljungquist1998,
author = {Ljungquist, B. and Berg, S. and Lanke, J. and McClearn, G.E. and Pedersen, N.L.},
title= {The effect of genetic factors for longevity: A comparison of identical and fraternal twins in the Swedish twin registry},
year = {1998},
journal = {Journals of Gerontology: Series A - Biological Sciences and Medical Sciences},
volume = {53},
number = {6},
pages = {M441--M446},
}