1. Department of Pharmacology; ‘Victor Babes’ University of Medicine and Pharmacy; Eftimie Murgu Square; Timisoara; Romania
2. Pierrel Research HP-RO SRL; Timisoara; Romania
3. Constipation and Faecal Incontinence Research Group; Department of Geriatrics; University Witten-Herdecke; Witten; Germany
4. Norgine Ltd; Uxbridge; UK