1. European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, 2440 Geel, Belgium; LGC, Queens Road, Teddington, Middlesex TW11 0LY, United Kingdom; National Measurement Institute, 1 Suakin Street, Pymble, NSW 2073, Australia; National Food Research Institute, GM Analytical Evaluation Team, Kannondai 2-1-12, Tsukuba, Ibaraki 305-8642, Japan; NIST, DNA Measurements Group, 100 Bureau Drive, Gaithersburg, Maryland 20899-8311; Korea Research Institute...