Please assess the completion status of the following clinical trial:

Trial Title: Trial of Two Central Venous Catheter (CVC) Flushing Schemes in Pediatric Hematology and Oncology Patients

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: NONE
- Phase: PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria~* Diagnosis of any malignant or nonmalignant disease that requires a single lumen Broviac or double lumen Hickman-type CVC for the purpose of chemotherapy, blood product support or hematopoietic stem cell transplantation.~* CVC is planned to remain in situ for 6 months from study entry~Exclusion Criteria:~* Thrombophilia (e.g. Factor V Leiden mutation, antiphospholipid syndrome) or previous thrombosis requiring anticoagulation (e.g. enoxaparin, unfractionated heparin)~* Bleeding disorder (e.g. von Willebrand's disease, hemophilia)~* Previous CVC that was removed due to any complication

- Gender: ALL
- Minimum Age: None
- Maximum Age: 17 Years
- Healthy Volunteers: f

Study Arms:
- 10U/l heparin (Type: ACTIVE_COMPARATOR): None
- normal saline (Type: EXPERIMENTAL): None

Based on this trial design, predict the completion outcome and termination type (if applicable).