1 Vatche and Tamar Manoukian Division of Digestive Diseases, University of California, Los Angeles, Los Angeles, California; G. Oppenheimer Center for Neurobiology of Stress and Resilience, Los Angeles, California; UCLA Goodman-Luskin Microbiome Center, Los Angeles, California; University of California, Los Angeles, Los Angeles, California.
2 Vatche and Tamar Manoukian Division of Digestive Diseases, University of California, Los Angeles, Los Angeles, California; G. Oppenheimer Center for Neurobiology of Stress and Resilience, Los Angeles, California; UCLA Goodman-Luskin Microbiome Center, Los Angeles, California; University of California, Los Angeles, Los Angeles, California. Electronic address: linchang@mednet.ucla.edu.