1. Department of Medicine; Johns Hopkins University School of Medicine; Baltimore Maryland U.S.A
2. Department of Pharmacology; Temple University School of Medicine; Philadelphia Pennsylvania U.S.A
3. Fortis Colorectal Hospital; Singapore City Singapore
4. Department of Colorectal Surgery; Digestive Disease Center; Cleveland Clinic Florida; Weston Florida U.S.A
5. NEMA Research Inc.; Bonita Springs Florida U.S.A
6. Department of Pharmaceutical Sciences; Temple University School of Pharmacy; Philadelphia Pennsylvania U.S.A