title: [Attention food service: a 10 minute walk is enough in winter for adequate vitamin D production].
authors.forename: Andrea
authors.initials: A
authors.lastname: Flemmer
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D005522:Food Services; D006801:Humans; D009751:Nutritional Requirements; D012621:Seasons; D013472:Sunlight; D014808:Vitamin D Deficiency / Q000451:nursing* / Q000517:prevention & control; D016138:Walking