1. Department of Anatomy & Neurobiology, School of Medicine; University of California; Irvine California
2. Department of Cognitive Neuroscience, Donders Inst. for Brain, Cognition & Behaviour; Radboud University Medical Centre Nijmegen; Nijmegen The Netherlands
3. Department of Honeybee Protection and Biosafety; Institute of Agricultural Research, Chinese Academy of Agricultural Sciences, Haidian District; Beijing P.R. China