Please assess the completion status of the following clinical trial:

Trial Title: Emails Promoting COVID-19 Vaccination Among Healthcare Workers

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

Eligibility Criteria:
Inclusion Criteria:~* Employees at Geisinger Health System who have not gotten a COVID-19 vaccination~Exclusion Criteria:~* None

- Gender: ALL
- Minimum Age: None
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Delayed Contact (Type: NO_INTERVENTION): This group will not receive an email for at least two days.
- Social Proof (Type: EXPERIMENTAL): This group will receive an email that points out that vaccine availability for employees will soon be limited. It also emphasizes how many fellow health care workers have been vaccinated. Seeing the behaviors of other people might encourage recipients to copy that behavior.
- Reframing Side Effects and Adverse Reactions (Type: EXPERIMENTAL): This group will receive an email that points out that vaccine availability for employees will soon be limited. It also addresses concerns about the side effects and adverse reactions of the vaccine. Due to potentially overblown concerns about the vaccine caused by the salience of side effects in the (social) media, the email attempts to reframe the risks by explicitly noting the small possibility of being affected by serious side effects and by contrasting that to the more severe effects of COVID-19. As a result of this reframing, recipients might recalibrate their perception of risks and benefits and opt for vaccination.

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