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Assessing tobacco use in an African population: serum and urine cotinine cut-offs from South Africa
(Elsevier, 2019)
Background
Cotinine, a nicotine metabolite, is used to measure tobacco use and exposure, but recommended cut-offs to differentiate tobacco users from those exposed through the environment range from 3 to 58 ng/ml in serum, ...
Coverage and factors associated with vitamin A supplementation among children aged 6-59 months in twenty-three sub-Saharan African countries
(Cambridge Univ Press, 2019)
Objective: The present study aimed to give an overall view of the pattern of highdose vitamin A supplementation (VAS) coverage in twenty-three sub-Saharan
African countries and factors associated with receipt of VAS among ...