1. CURE Hemostasis Research Group; CURE Digestive Diseases Research Center; David Geffen School of Medicine at UCLA; Los Angeles CA USA
2. Division of Digestive Diseases; UCLA Ronald Reagan Medical Center; Los Angeles CA USA
3. Department of Gastroenterology; Cochin Hospital; APHP; Paris France
4. Gastroenterology Division; VA GLAHC; Los Angeles CA USA
5. Department of Biomathematics; University of California; Los Angeles CA USA