1. Doping Control Laboratory; Ghent University; Technologiepark 30 B Zwijnaarde B-9052 Belgium
2. Sports Medicine Research and Testing Laboratory; Arapeen drive 560 Salt Lake City UT 84108 USA
3. Laboratorio Antidoping; Federazione Medico Sportiva Italiana; Largo Giulio Onesti 1 Rome I-00197 Italy
4. Center for Vaccinology; Ghent University and Hospital; De Pintelaan 185 B-9000 Ghent Belgium