Please assess the completion status of the following clinical trial:

Trial Title: Cooling Vest May Reduce Heat Stress During Surgery

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* Surgeons who perform elective major orthopedic surgery such as total hip and knee arthroplasties scheduled for 90 to 150 minutes at the Cleveland Clinic Main Campus.~* Orthopedic surgeons ages of 25-65 years old, as body temperatures may be lower and less stable in the elderly (Waalen \& Buxbaum, 2011), who operate frequently enough to participate in four cross-over cases.~* Surgical helmet system is consistently worn for each of the surgeon's four cases, if used in the first case.~Exclusion Criteria:~* Surgical cases that require surgeons to sit on stools during the procedure, which may impact temperature and energy expenditure.~* - Surgeons who report having a recent illness within 24 hours prior to the surgery, symptoms producing a febrile condition;~* Surgeons who worked the previous evening.~* Surgeons who wear lead X-ray gowns.

- Gender: ALL
- Minimum Age: 25 Years
- Maximum Age: 65 Years
- Healthy Volunteers: t

Study Arms:
- Cooling vest, then without cooling vest, then without cooling vest, then cooling vest (ABBA) (Type: EXPERIMENTAL): Surgeons first performed one surgery with the cooling vest. On another day, they then performed one surgery without the cooling vest. Then on another day, they performed another surgery without the cooling vest. Then they finally performed one surgery with the cooling vest.
- Without cooling vest, then cooling vest, then cooling vest, then without cooling vest (BAAB) (Type: EXPERIMENTAL): Surgeons first performed one surgery without the cooling vest. On another day, they then performed one surgery with the cooling vest. Then on another day, they performed another surgery with the cooling vest. Then they finally performed one surgery without the cooling vest.
- Cooling vest, then cooling vest, then without cooling vest, then without cooling vest (AABB) (Type: EXPERIMENTAL): Surgeons first performed one surgery with the cooling vest. On another day, they then performed another surgery with the cooling vest. Then on another day, they performed one surgery without the cooling vest. Then they finally performed another surgery without the cooling vest.
- Without cooling vest, then without cooling vest, then cooling vest, then cooling vest (BBAA) (Type: EXPERIMENTAL): Surgeons first performed one surgery without the cooling vest. On another day, they then performed another surgery without the cooling vest. Then on another day, they performed one surgery with the cooling vest. Then they finally performed another surgery with the cooling vest.

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