Response

Affiliations

• ¹ Department of Gastroenterology, Kaiser Permanente, Los Angeles Medical Center, Los Angeles, California, USA.
• ² Department of Gastroenterology, Kaiser Permanente, Anaheim Medical Center, Anaheim, California, USA.
• ³ Department of Gastroenterology, United Medical Doctors, Riverside, California, USA; University of California Riverside School of Medicine, Riverside, California, USA.