public ActionResult DeleteTrialCenterProcedureRole([DataSourceRequest] DataSourceRequest request, TrialCenterProcedureRole role)
        {
            if (role != null)
            {
                DataProvider.Delete(role);
            }

            return Json(role);
        }
        public ActionResult AddTrialCenterProcedureRole([DataSourceRequest] DataSourceRequest request, TrialCenterProcedureRole role)
        {
            if (role != null && ModelState.IsValid)
            {
                DataProvider.Add(role);
            }

            return Json(role);
        }