Please assess the completion status of the following clinical trial:

Trial Title: A Study to Describe the Efficacy of Diphereline Following Conservative Surgery in Deep Infiltrating Endometriosis (DIE) Patients Over a Period of 24 Months

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: CASE_ONLY
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Patients diagnosed with DIE and having received surgery treatment within one month before inclusion~* Premenopausal women aged \>=18 years old.~* Written ICF has been obtained prior to any study-related procedures~* Patient for whom the treating physician already made the decision to treat by Diphereline.~* Patient should be mentally and physically able to express her symptom complaints and answer questions.~Exclusion Criteria:~* Pregnancy or lactation.~* Patients currently on treatment or who have been on therapy with a GnRHa in the last 6 months.~* Premenopausal women who may reach menopause within the 3 years post randomisation.~* Hypersensitivity to Triptorelin or one of the excipients of Triptorelin 3.75mg~* Treatment with another research drug over the last 3 months before the study~* Potentially unreliable patients, and those judged by the investigator to be unsuitable for the study.

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Deep Infiltrating Endometriosis (DIE) (Type: None): None

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