Please assess the completion status of the following clinical trial:

Trial Title: Effects of Preoperative Gabapentin Versus Pregabalin on Shoulder Pain After Laparoscopic Cholecystectomy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE4
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* uncomplicated laparoscopic cholecystectomy~* American Society of Anesthesiologists (ASA) status \< 3~Exclusion Criteria:~* acute cholecystitis~* conversion to open cholecystectomy~* history of epilepsia, psychiatric disorders and cognitive impairment~* Pregnancy and breastfeeding~* allergy to pregabalin and/or gabapentin~* Chronic pain~* Chronic medication by corticosteroids, neuroleptics or non steroidal anti inflammatory drugs

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

Study Arms:
- placebo (Type: PLACEBO_COMPARATOR): Patients receive 2 capsules as placebo 2 hours before anesthesia. The capsules are delivered by the hospital pharmacy.
- pregabalin (Type: EXPERIMENTAL): patients receive 2 capsules of pregabalin (pregabalin 75), two hours before anesthesia.
- gabapentin (Type: EXPERIMENTAL): patients receive 2 capsules of gabapentin (gabapentin 300), two hours before anesthesia.

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