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===2017: [https://pubpeer.com/publications/41F6EA57D0803EEE9DF65162DF0097 Electronic Cigarette Use in US Adults at Risk for or with COPD: Analysis from Two Observational Cohorts]=== | ===2017: [https://pubpeer.com/publications/41F6EA57D0803EEE9DF65162DF0097 Electronic Cigarette Use in US Adults at Risk for or with COPD: Analysis from Two Observational Cohorts]=== | ||
===2016: [https://pubpeer.com/publications/566A631490E2222E1E6DE4F44B6989 Chronic electronic cigarette exposure in mice induces features of COPD in a nicotine-dependent manner]=== | |||
=Expressions of Concern (By Journal Staff)= | =Expressions of Concern (By Journal Staff)= | ||
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