Please assess the completion status of the following clinical trial:

Trial Title: Superficial Cervical Plexus Block for Shoulder Pain After Lung Surgery

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* subjects who clinically consented to elective thoracotomy or video-assisted thoracoscopic surgery (VATS) under general anesthesia and epidural analgesia~* ages between 18 and 75 years~Exclusion Criteria:~* inability to perform thoracic epidural~* violation of protocol (e.g., administration of medication that does not comply with the study protocol)~* subject has change of mind~* surgery has to be repeated~Non-inclusion Criteria:~* subject refusal~* non-English speaking~* previous chronic or neuropathic pain~* previous chronic use of opioids~* history of psychiatric disorder~* allergy to local anesthetic~* previous ipsilateral thoracotomy or VATS~* prior history of shoulder pain

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- Controls (Type: NO_INTERVENTION): Subjects enrolled in this group will only have a line drawn on the side of their neck for superficial cervical plexus block, but we will not perform the injection. The subjects will not be aware whether they received an intra-operative block or not. In addition, neither the Post-Anesthesia Care Unit nurse nor the providers involved in the post-operative care will be aware of subjects group assignment.
- Superficial Cervical Plexus Block (Type: ACTIVE_COMPARATOR): Subjects enrolled in this group will have a line drawn and will receive a superficial cervical plexus block at the end of the surgery just prior to emergence from anesthesia.

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