@article{Gruenewald2006,
author = {Gruenewald, T.L. and Seeman, T.E. and Ryff, C.D. and Karlamangla, A.S. and Singer, B.H. },
title= {Combinations of biomarkers predictive of later life mortality},
year = {2006},
doi = {10.1073/pnas.0606215103},
volume = {103},
number = {38},
pages = {14158--14163},
}