fix error due to the copy of patients characterisitcs

SNDSGenerator/data_factory.py

@@ -235,7 +235,7 @@ class PatientFactory:
 
     def __load__(self, patient, colmap):
         p = Patient()
-        p.raw_data = patient
+        p.raw_data = patient.copy()
         if "sex" in colmap:
             p.Sex = patient[colmap["sex"]]
         else: