1. Metal allergy in north Norwegian schoolchildren and its relationship with ear piercing and atopy
2. Ear piercing - a cause of nickel allergy in schoolgirls?
3. Nickel sensitization and ear piercing in an unselected Danish population
4. 4European Parliament and Council Directive 94/27/EC of 30 June 1994 amending for the 12th time Directive 76/769/EEC on the approximation of the laws, regulations and administrative provisions of the Member States relating to restrictions on the marketing and use of certain dangerous substances and preparations .
5. 5Commission Directive 2004/96/EC of 27 September 2004 amending Council Directive 76/769/EEC as regards restrictions on the marketing and use of nickel for piercing post assemblies for the purpose of adapting its Annex I to technical progress .