Please assess the completion status of the following clinical trial:

Trial Title: Clinical Comparison of the Airway Devices

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~1. The subjects will be adult surgical candidates aged 18-80, ASA I-III, Mallampati I or II, presenting for elective surgery who require general anesthesia in whom tracheal intubation is not necessary.~2. Both male and female patients will be included.~Exclusion Criteria:~* Patients will be excluded from the study if they present as Mallampati III or IV, ASA IV-V or emergency status. Additionally, they will be excluded if they meet one of the contraindication criteria of the LMA ProSeal including:~  1. Obesity~ 2. Pregnancy~ 3. History of gastric regurgitation, heart burn, ileus or full stomach~ 4. History of low pulmonary compliance or high pulmonary resistance~ 5. Known history of difficult endotracheal intubation or signs suggesting the possibility of difficult intubation~ 6. Pharyngeal pathology or~ 7. Upper airway obstruction due to laryngeal pathology.~* Additionally, they will be excluded if they meet one of the contraindication criteria for the Combitube including:~  1. Intact gag reflexes~ 2. Height \<4 feet~ 3. Central airway obstruction~ 4. Recent ingestion of caustic substances~ 5. Known esophageal pathology, or~ 6. Known latex allergy.~* They will also be excluded if any tracheal disease is present such as tracheal tumors, stenosis or previous tracheal surgery.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: t

Study Arms:
- LTS-D (Type: EXPERIMENTAL): All the cases were divided into one of the group LTS-D, PLMA, and ETC
- ProSeal Laryngeal Mask Airway (Type: EXPERIMENTAL): All patients were divided into either LTS-D, PLMA, or the ETC group.
- Esophageal Tracheal Combitube (ETC) (Type: EXPERIMENTAL): All patients are divided into one of the group, LTS-D, PLMA, or the ETC.

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