1. Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA.
2. Department of Neurology and Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, Los Angeles, CA 90095, USA.
3. Institute for Infection Immunology, Twincore, Hannover 30625, Germany.
4. Molecular, Cellular, and Integrative Physiology Program, University of California, Los Angeles, Los Angeles, CA 90095, USA.
5. Department of Pathology, University of California, San Francisco, San Francisco, CA 94143, USA.
6. Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.