Hiscock, R., Bauld, L., Amos, A. et al. 2012
Higgins, M.W., Keller, J.B., Metzner, H.L. 1975
Hitchman, S.C., Fong, G.T., Zanna, M.P. et al. 2014
Kostova, D., Tesche, J., Perucic, A.M. et al. 2013
Centers for Disease Control and Prevention 2014
Centers for Disease Control and Prevention 2009
Centers for Disease Control and Prevention 2014
Centers for Disease Control and Prevention 2008
Centers for Disease Control and Prevention 2011
Centers for Disease Control and Prevention 2009
