public IActionResult Patients(string sortOrder)
        {
            ViewData["NameSortParm"] = String.IsNullOrEmpty(sortOrder) ? "name_desc" : "";
            var patientsObs = _dataSourceService.GetListData <ListObservation>("Observation", 0).ToList();


            var patientsObsEnu = (IEnumerable <ListObservation>)patientsObs;

            patientsObsEnu = patientsObsEnu.Where(x => x.subject != null);
            patientsObsEnu = patientsObsEnu.Where(x => x.subject.reference != null);
            patientsObsEnu = patientsObsEnu.Where(x => x.subject.reference.Split('/').Count() == 2);
            var ids = patientsObsEnu.Select(x => x.subject.reference.Split('/')[1]).ToList();

            ids.AddRange(TempValid);
            var uniqIds = ids.ToHashSet();

            var patients = new List <ListPatient>();

            foreach (var id in uniqIds)
            {
                patients.Add(_dataSourceService.GetData <ListPatient>($"Patient/{id}"));
                Console.Write(@$ "" "{id}" ",");
            }

            patients = patients.Where(x => x.name != null).ToList();
            patients = patients.Where(x => x.name.Count >= 1).ToList();
            patients = patients.Where(x => x.name.First().given != null).ToList();

            if (sortOrder == "name_desc")
            {
                patients = patients.OrderByDescending(x => x.name.First().family).ToList();
            }
            else
            {
                patients = patients.OrderBy(x => x.name.First().family).ToList();
            }

            return(View(patients));
        }