Please assess the completion status of the following clinical trial:

Trial Title: CGRP's Cluster Headache Inducing Abilities in Cluster Headache Patients

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: BASIC_SCIENCE
- Time Perspective: None
- Masking: DOUBLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Fulfillment of IHS criteria for cluster headache either chronic or episodic~* Patients in bouts 1-32 attacks per week~* Patients in remission minimum of 1 month remission time~* fertile women must use safe contraception~Exclusion Criteria:~* All other primary types of headache~* headache 8 hours or less before study day begins~* pregnant or lactating women~* any history or clinical sigs of hyper/hypotension, heart disease, mental disorder, substance abuse, or other illness deemed relevant by the medical doctor assessing the patient

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

Study Arms:
- Active (Type: ACTIVE_COMPARATOR): 1.5µg/min IV calcitonin-gene related peptide for 20 minutes
- Placebo (Type: PLACEBO_COMPARATOR): IV placebo for 20 minutes

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