http://allergyaction.org/wp-content/uploads/2013/11/Gowland-Reactions-Regulation-and-Risk-protecting-consumers-with-food-allergies-and-intolerances.pdf (http://allergyaction.org/wp-content/uploads/2013/11/Gowland-Reactions-Regulation-and-Risk-protecting-consumers-with-food-allergies-and-intolerances.pdf)
http://www.ctajournal.com/content/pdf/2045-7022-3-31.pdf (http://www.ctajournal.com/content/pdf/2045-7022-3-31.pdf)
above purchasing behaviours of food allergic consumers in uk.