Xiaofei Jiang1,2,3,4, Laurent Poirel1,2,3, Patrice Nordmann1,2,3,4,5. 1. a Emerging Antibiotic Resistance Unit, Medical and Molecular Microbiology, Department of Medicine , University of Fribourg , Fribourg , Switzerland. 2. b French INSERM European Unit , University of Fribourg (LEA-IAME) , Fribourg , Switzerland. 3. c National Reference Center for Emerging Antibiotic Resistance , Switzerland. 4. d Department of Laboratory Medicine , Huashan Hospital, Shanghai Medical College, Fudan University , Shanghai , China. 5. e University of Lausanne and University Hospital Center , Lausanne , Switzerland.