Please assess the completion status of the following clinical trial:

Trial Title: Investigation of the Effects of Electronic Cigarettes on Vascular Health

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: DIAGNOSTIC
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Male or female between 18 and 50 years of age.~* Good general health with no history of diabetes, coronary artery disease, peripheral arterial disease, chronic disease or hypertension.~* Ability to sign an informed consent.~Tobacco product users will have additional inclusion criteria:~* For TC smokers, daily TC smoking in the past 6 months, at least 10 cigarettes per day, with no EC exposure in the past 6 months~* For EC users, daily EC use in the past 6 months, at least 10 sessions per day, with no TC exposure in the past 6 month~* For non-smokers, no significant lifetime exposure to any nicotine-containing product, where significant exposure is defined as daily use of any nicotine-containing product for more than one week or once monthly use for more than 6 months.~Exclusion Criteria:~* History of renal disease, hypertension, diabetes, congestive heart failure or emphysema~* Use of ACE inhibitors, Angiotensin II receptor blockers, diuretics, aldosterone, renin blockers, aspirin, statins, sildenafil (or other PDE5 inhibitors) and NSAIDs.~* History of substance abuse~* Currently using nicotine replacement or other tobacco cessation products or intentionally abstaining from nicotine-containing products~* IV contrast exposure in the past 1 month~* Inability to place an IV catheter or draw blood for any reason~* Pregnant women or breastfeeding~  * Potential subjects will be asked if they are pregnant. Verbal confirmation of pregnancy will be sufficient.~* Fever of \>101°F or BP \>180/95~* BMI ≥30

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 50 Years
- Healthy Volunteers: t

Study Arms:
- Electronic cigarettes (EC) smokers (Type: EXPERIMENTAL): None
- traditional cigarette (TC) smokers (Type: EXPERIMENTAL): None
- nonsmokers (Type: ACTIVE_COMPARATOR): None

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