@book{Crimmins2013, author = {Crimmins, E. and Faul, J. and Kim, J.K. and Guyer, H. and Langa, K. and Ofstedal, M.B. and Sonnega, A. and Wallace, R. and Weir, D. }, title= {Documentation of biomarkers in the 2006 and 2008 Health and Retirement Study}, year = {2013}, address = {Ann Arbor}, publisher = {Survey Research Center, University of Michigan}, }