Please assess the completion status of the following clinical trial:

Trial Title: Environmental Treatment for Seasonal Affective Disorder (SAD)

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

Eligibility Criteria:
Inclusion Criteria:~* Subjects meet DSM-IV criteria for major depressive episodes with a seasonal pattern, winter type.~Exclusion Criteria:~* Significant suicidal risk~* Serious medical illness~* Pregnancy~* Other DSM-IV diagnoses~* Taking mood altering medication~* May not travel to a sunny destination during study

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

Study Arms:
- LED phototherapy device (Type: EXPERIMENTAL): Litebook treatment devices: LED phototherapy device, used for 30 min before 8 am
- Inactivated Negative Ion Generator (Type: PLACEBO_COMPARATOR): Equivalent exposure to inactivated negative ion generator

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