@article{Doblhammer2003,
author = {Doblhammer, Gabriele and Oeppen, Jim},
title= {Reproduction and longevity among the British peerage: the effect of frailty and health selection},
year = {2003},
doi = {10.1098/rspb.2003.2400},
journal = {Proc Biol Sci.},
volume = {270},
number = {1524},
pages = {1541--1547},
}