1 Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Lausanne and Geneva, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland.
2 Site D'Epalinges, Transfusion Interrégionale CRS, Epalinges, Switzerland.
3 University of Brighton, Brighton, United Kingdom.
4 Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Lausanne and Geneva, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland. nicolas.leuenberger@chuv.ch.