title: Market research techniques. How three large chains learn what their customers want.
mesh_terms: D003258:Consumer Behavior; D005246:Feedback; D005522:Food Services / Q000592:standards*; D019538:Health Care Surveys; D006801:Humans; D008389:Marketing of Health Services / Q000379:methods; D017060:Patient Satisfaction; D012147:Restaurants; D014481:United States