China National Prevalence Survey on Smoking 1996 Survey: Household - Nationally representative - Subnationally representative - Urban-rural representative GHDx Entry last modified on: Jan 7, 2025
Columbia Seroprevalence of Hepatitis A and Chickenpox in Bogotá Seroprevalencia de la Hepatitis A y la Varicela en Bogotá, Colombia Scientific literature GHDx Entry last modified on: Nov 8, 2021