1. Intensive Care Unit, Curry Cabral HospitalCentral Lisbon Hospital CenterLisbon Portugal
2. Department of Public Health SciencesMedical University of South CarolinaCharleston SC
3. Division of Digestive and Liver DiseasesUniversity of Texas Southwestern Medical CenterDallas TX
4. Department of Internal MedicineUniversity of Kansas Medical CenterKansas City KS
5. Departments of Critical Care and Division of Gastroenterology (Liver Unit)University of AlbertaEdmonton Alberta Canada