Additional file 1.
Title. Study sample size, by country and sex, World Health Survey 2002–04. Description: Displays the study sample size of men and women (aged 18 or higher) from 48 low- and middle-income countries that participated in the 2002–04 World Health Survey.
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Hosseinpoor et al. BMC Public Health 2012 12:912 doi:10.1186/1471-2458-12-912