public treatment_options AddSubTreatmentOptions(treatment_options _item, bool _insertToStore = false)
 {
     if(sub_treatments.IndexOf(_item) != -1) return _item;
     sub_treatments.Add(_item);
     _item.parent_id = id;
     if(_insertToStore && !Meridian.Default.treatment_optionsStore.Exists(_item.id))
     {
         Meridian.Default.treatment_optionsStore.Insert(_item);
         _item.LoadAggregations(Meridian.Default);
     }
     return _item;
 }