1. Beijing Advanced Innovation Center for Food Nutrition and Human HealthNational Center for Veterinary Drug Safety EvaluationCollege of Veterinary MedicineChina Agricultural University Yuanmingyuan West Road No.2 Beijing 100193 China
2. Institute of Food SafetyDepartment of Veterinary SciencesLudwig-Maximilians-University Munich 85764 Oberschleißheim Germany
3. Department of Biomedical EngineeringDuke University Durham NC 27708 USA