Efficiency of food purchasing among working-class families in Colombia.
D000328:Adult; D003105:Colombia; D003201:Computers; D003365:Costs and Cost Analysis; D005190:Family; D005260:Female; D005502:Food; D005518:Food Preferences; D006801:Humans; D008297:Male; D008962:Models, Theoretical; D009749:Nutrition Surveys; D009751:Nutritional Requirements; D012959:Socioeconomic Factors