Upper-middle-income economies

Levy, D.T., Wen, C.P., Chen, T.Y. et al. 2005

Djutaharta, T., Viriya Surya, H., Pasay, N. et al. 2005

van Walbeek, C.P. 2005

Yuanliang, B., Zongyi, Z. 2005

Hu, T.W., Mao, Z., Liu, Y. et al. 2005

van Walbeek, C.P. 2005

Centers for Disease Control and Prevention 2005

Lee, J.M., Hwang, T.C., Ye, C.Y. et al. 2004

Lee, J.M., Hwang, T.C., Ye, C.Y. et al. 2004

World Trade Organization 2004

Ross, H. 2004

Ross, H. 2004