@article{Martin2007,
author = {Martin, L.G. and Schoeni, R.F. and Freedman, V.A. and Andreski, P.},
title= {Feeling better? Trends in general health status},
year = {2007},
doi = {10.1093/geronb/62.1.S11},
volume = {62B(1},
pages = {811--821},
}