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The delivery and uptake of nicotine from an aerosol rod. D W Sepkovic , S G Colosimo , C M Axelrad , J D Adams and N J Haley Nicotine aerosol rods were assessed for their possible usefulness as substitutes for cigarettes. Under standard FTC conditions, the per puff delivery of the aerosol rod...
Birthweight and gestational age: mothers' estimates compared with state and hospital records. R E Little Birthweight and gestational age estimates made by research subjects were compared with values obtained from birth certificates and hospital records. Ninety-one per cent of mothers' estimates...
Level of response in epidemiologic studies using the card-back system to contact subjects. B A Mueller , A McTiernan and J R Daling Response levels obtained from two methods of patient contact to obtain subject consent for participation in epidemiologic studies were compared. When a signed,...
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