Please assess the completion status of the following clinical trial:

Trial Title: Cholinergic Augmentation in Frequently Falling Subjects With Parkinson's Disease

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

Eligibility Criteria:
Inclusion Criteria:~* Age over 21~* Diagnosis of Parkinson's disease~* Treated with dopaminergic medication for at least 1 year~Exclusion Criteria:~* Must be ambulatory (can use walker or cane)~* No obvious remediable cause of falls~* Falls are on basis of non-CNS etiologies (cardiogenic, orthopedic, peripheral neuropathy, etc)~* Dementia present (MMSE \< 25)~* Not taking cholinergic or anticholinergic medications 10 days prior to screening visit~* No Warfarin use

- Gender: ALL
- Minimum Age: 21 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Donepezil (Type: EXPERIMENTAL): None
- Sugar Pill (Type: PLACEBO_COMPARATOR): None

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