About the Authors

Mark Pimentel

pimentelm@cshs.org

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Walter Morales

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Ali Rezaie

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Emily Marsh

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Anthony Lembo

Affiliation Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America

James Mirocha

Affiliation Department of Biostatistics, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Daniel A. Leffler

Affiliation Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America

Zachary Marsh

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Stacy Weitsman

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Kathleen S. Chua

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Gillian M. Barlow

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Enoch Bortey

Affiliation Salix Pharmaceuticals, Inc., Raleigh, North Carolina, United States of America

William Forbes

Affiliation Salix Pharmaceuticals, Inc., Raleigh, North Carolina, United States of America

Allen Yu

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Christopher Chang

Affiliation GI Motility Program, Cedars-Sinai Medical Center, Los Angeles, California, United States of America

Competing Interests

The authors have read the journal's policy and the authors of this manuscript have the following competing interests: Cedars-Sinai has a licensing agreement with Salix Pharmaceuticals, Commonwealth Laboratories, and Synthetic Biologics, Inc. Dr. Mark Pimentel is a paid consultant for Salix Pharmaceuticals, Commonwealth Laboratories, Micropharma Inc. Naia Pharmaceuticals and Synthetic Biologics Inc. Dr. Mark Pimentel and Dr. Christopher Chang are on the advisory board for Salix Pharmaceuticals. Dr. Anthony Lembo is a consultant for Salix Pharmaceuticals and Ironwood Pharmaceuticals. The remaining authors have no competing interests to disclose. The authors thank the Cedars-Sinai Inflammatory Bowel Disease Program for providing the blood samples from patients with inflammatory bowel disease used in this study. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MP CC AL DL. Performed the experiments: WM EM ZM AY SW. Analyzed the data: AR JM MP CC WM EM ZM AY SW. Contributed reagents/materials/analysis tools: WF EB. Wrote the paper: MP AR CC GB WF EB AL DL WM KSC. Recruited subjects: KSC AL. Designed the clinical trial from which the IBS samples were derived: WF EB. Assisted with troubleshooting experiments: SW GB.