Upper-middle-income economies
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Petkova, R., Ileva, R., Rusenov, A. 2003
Centers for Disease Control and Prevention 2003
Centers for Disease Control and Prevention 2003
Centers for Disease Control and Prevention 2003
Centers for Disease Control and Prevention 2003
Centers for Disease Control and Prevention 2003
Tsai, Y.W., Sung, H.Y., Yang, C.L. et al. 2003
Sayginsoy, O., Yürekli, A.A., de Beyer, J. 2002
Sayginsoy, O., Yürekli, A.A., de Beyer, J. 2002