Keyphrases
Electronic Cigarettes
100%
Health Risk
100%
Nicotine
100%
Risk Markers
100%
Health Effects
33%
Electronic Cigarette Use
22%
Cigarette Smokers
22%
Cigarette Smoking
22%
Fine Particles
22%
Health Markers
22%
Current Smokers
11%
Specific Intent
11%
Ex-smokers
11%
Respiratory Effects
11%
Placebo
11%
Short-term Effects
11%
Flavor Compounds
11%
Cotinine
11%
Quit Smoking
11%
High Dose
11%
Carcinogen
11%
Daily Smokers
11%
Randomized Double-blind
11%
Human Respiratory Tract
11%
Potential Gains
11%
Cardiovascular Effects
11%
Health Outcomes
11%
Aerosolized
11%
Telephone Survey
11%
US Adults
11%
Online Survey
11%
United States
11%
Glutathione
11%
Behavioral Markers
11%
Propylene Glycol
11%
Pulmonary Function Test
11%
Tobacco
11%
Smoking Behavior
11%
Regular Basis
11%
Potential Harm
11%
Popular
11%
Lipid Panel
11%
Placebo-controlled
11%
Penn State
11%
Free Radicals
11%
Nicotine Content
11%
Nicotine Delivery
11%
Regulatory Science
11%
Exhaled CO
11%
Tobacco Product Use
11%
Traditional Cigarette
11%
Nursing and Health Professions
Cigarette Filter
100%
Placebo
50%
Smoking Reduction
25%
Nicotine Withdrawal
25%
Drug Megadose
25%
Health Outcomes
25%
Carcinogen
25%
Propylene Glycol
25%
Cotinine
25%
Pulmonary Function Testing
25%
Glutathione
25%
Biological Marker
25%
Free Radical
25%
Pharmacology, Toxicology and Pharmaceutical Science
Electronic Cigarette
100%
Cigarette Smoking
40%
Placebo
40%
Glutathione
20%
Free Radical
20%
Biological Marker
20%
Carcinogen
20%
Propylene Glycol
20%
Cotinine
20%
Glycerol
20%