1. Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan.
2. Department of Mathematics and Volen National Center for Complex Systems, Brandeis University, Waltham, MA 02454, USA.
3. Nina Ireland Laboratory of Developmental Neurobiology, Department of Psychiatry, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA 94158, USA.