@article{Salomon2009,
author = {Salomon, J.A. and Nordhagen, S. and Oza, S. and Murray, C.J.L.},
title= {Are Americans feeling less healthy? The puzzle of trends in self-rated health},
year = {2009},
doi = {10.1093/aje/kwp144},
volume = {170},
number = {3},
pages = {343--351},
}