Please assess the completion status of the following clinical trial:

Trial Title: FDDA Utilization Study (FDDAU)

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

Eligibility Criteria:
Inclusion Criteria:~Physicians:~* Established physicians with specialization in general internal medicine (GP).~* Regular consultation of patients with a complaint of a not yet explained fatigue (between 1 every 2 weeks and 5 per week)~Patients:~* 18 to 80 years old~* Male or female~* Fatigue of not yet explained origin~* The reason for encounter had to be fatigue (as a main symptom) of not yet explained origin, which had lasted for at least 2 weeks, but no longer than 2 years before inclusion.~* Subject (or legally acceptable representative) had provided the appropriate written informed consent. Subject had to provide written informed consent before any study-specific procedures were performed.~Exclusion Criteria:~Physicians:~* Works in/or is related to an iron center (a medical center known to be primarily inclined to prescribing intravenous iron supplements in cases of fatigue)~* Known as being experienced in fatigue or CFS (more than five patients per week) Specialized in psychosomatic medicine (in Switzerland: Fähigkeitsausweis SAPPM / Attestation ASMPP)~* Physicians having a sub-specialty (other than internists working as GPs in a private practice)~* Participation in the feasibility evaluation (excl. for utilization study)~Patients:~* Subject had known pre-existing anemia~* Subject with previous treatment of fatigue by a medical doctor during the last 3 months~* Subject had any pre-known disease, which is responsible for patient's fatigue with a high probability, according to GP's judgement (e.g., CHF, CKD, IBD, RA, MS, Cancer, etc...).~* Subject was known to take any drugs, which could be responsible for inducing fatigue symptoms, according to GP's judgement (e.g., antihistamines, antidepressants, benzodiazepines, hypnotics, anxiolytics, opioid formulations, etc...).~* Subject had a history of drug or alcohol abuse within 2 years prior to the 1st study visit (V1).~* Subject was currently enrolled or had completed any other clinical trial \< 30 days prior to 1st study visit (V1).~* Subject had previously participated in the The Fatigue Differential Diagnosis Aid (FDDA) for General Practitioners: Feasibility study.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- FDDA Group (Type: ACTIVE_COMPARATOR): Fatigue anamnesis was done with the help of the Fatigue Differential Diagnosis Aid.
- Non-FDDA group (Type: NO_INTERVENTION): Fatigue anamnesis was done without the help of the Fatigue Differential Diagnosis Aid.

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