 Volunteers take part in the activity held by Mexico's Health Department to mark the World AIDS Day in Mexico City Dec. 1, 2008. (Xinhua Photo)
 Mexican Secretary of Health Jose Angel Cordoba Villalobos speaks during the activity held by Mexico's Health Department to mark the World AIDS Day in Mexico City Dec. 1, 2008. (Xinhua Photo) 【1】 【2】 【3】 【4】
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