Please assess the completion status of the following clinical trial:

Trial Title: Endoscopic Posterior Mesorectal Resection in T1 Rectal Cancer

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Stage T1 (only)~* Over 18 years old~* Patient's consent~* Previous R0 resection of rectal tumor~Exclusion Criteria:~* Metastases (M1)~* Neoadjuvant chemotherapy or radiotherapy~* Meta- or synchronous tumors

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

Study Arms:
- Treatment arm (Type: EXPERIMENTAL): endoscopic posterior mesorectal resection

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