public JsonResult GetPresSymByDiagnosisId(string diagnosisId)
        {
            var model = _diagnosisService.GetPreSymByDiagnosisId(Convert.ToInt32(diagnosisId));

            if (model == null)
            {
                return(new JsonResult {
                    Data = new { Status = "Fail", msg = "No prescriptions for this diagnosis." }, JsonRequestBehavior = JsonRequestBehavior.AllowGet
                });
            }
            else
            {
                return(new JsonResult {
                    Data = new { Status = "Success", data = model }, JsonRequestBehavior = JsonRequestBehavior.AllowGet
                });
            }
        }