Upper-middle-income economies
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Centers for Disease Control and Prevention 2004
Collin, J., LeGresley, E., MacKenzie, R. et al. 2004
Gilmore, A.B., McKee, M. 2003
Tsai, Y.W., Yen, L.L., Yang, C.L. et al. 2003
Guindon, G.E., Perucic, A.M., Boisclai, D. 2003
Bosclair, D., Guindon, G.E., Perucic, A.M. 2003
Guindon, G.E., Perucic, A.M., Boisclair, D. 2003