Please assess the completion status of the following clinical trial:

Trial Title: Nitrogen Bubble Detection After Simulated Dives in Divers With PFO and After PFO Closure

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

Eligibility Criteria:
Inclusion Criteria:~1. previously diagnosed PFO or a PFO that has been occluded by a catheter-based procedure~2. signed informed consent~Exclusion criteria:~1. another dive performed in the preceding 24 hours~2. another previously diagnosed right-to-left shunt~3. disagreement to be included in the study

- Gender: ALL
- Minimum Age: 19 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Patent foramen ovale dive A group (Type: None): Divers with a previously diagnosed patent foramen ovale observed after Dive A.
- Closure dive A group (Type: None): Divers with a patent foramen ovale previously closed by a catheter-based procedure observed after Dive A.
- patent foramen ovale dive B group (Type: None): Divers with a previously diagnosed patent foramen ovale observed after Dive B.
- closure dive B group (Type: None): Divers with a patent foramen ovale previously closed by a catheter-based procedure observed after Dive B.

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