Please assess the completion status of the following clinical trial:

Trial Title: Water Content in E-Liquids

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: OTHER
- Time Perspective: None
- Masking: DOUBLE
- Phase: None
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* at least 21 years old~* able to read/write~* \>/= 6 mths e-cig use~* regular e-cig use (\>/= 4 days/week)~* use of flavored e-cigs~* use of nicotine containing e-cigs~* urine cotinine \>/= 200ng/ml~* no plan to quit e-cig use~Exclusion Criteria:~* breastfeeding, pregnant, trying to become pregnant~* Medical conditions that increase risk of respiratory problems among participants~* Current use of illegal substances~* Medical conditions increasing risk of respiratory problems in nonpatient populations~* Current diagnosis of an untreated psychiatric condition~* Not fully vaccinated for Coronavirus-19

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

Study Arms:
- Experimental E-Liquid Order A (Type: EXPERIMENTAL): All participants will be given all e-liquids (i.e. all 16 flavor\*water concentration combinations (4 flavors and four water concentrations)) in this within subject cross-over design study. Participants will be randomized in the order in which they receive the flavor conditions (across the 2 visits). For each flavor condition, water order will be randomized.
- Experimental E-Liquid Order B (Type: EXPERIMENTAL): All participants will be given all e-liquids (i.e. all 16 flavor\*water concentration combinations (4 flavors and four water concentrations)) in this within subject cross-over design study. Participants will be randomized in the order in which they receive the flavor conditions (across the 2 visits). For each flavor condition, water order will be randomized.
- Experimental E-Liquid Order C (Type: EXPERIMENTAL): All participants will be given all e-liquids (i.e. all 16 flavor\*water concentration combinations (4 flavors and four water concentrations)) in this within subject cross-over design study. Participants will be randomized in the order in which they receive the flavor conditions (across the 2 visits). For each flavor condition, water order will be randomized.
- Experimental E-Liquid Order D (Type: EXPERIMENTAL): All participants will be given all e-liquids (i.e. all 16 flavor\*water concentration combinations (4 flavors and four water concentrations)) in this within subject cross-over design study. Participants will be randomized in the order in which they receive the flavor conditions (across the 2 visits). For each flavor condition, water order will be randomized.

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