E cigarettes might harm lung tissue much like regular cigarettes do whether they contain nicotine or not a new study says. Knowledge and use of e cigarettes among nursing students: results from a cross sectional survey in north eastern Italy BMC Public Health Springer Nature Link E cigarette use and respiratory symptoms in adults: A systematic review and meta analysis E Cigarettes and Cardiopulmonary Health: Review for Clinicians Circulation E cigarettes: A win or loss for public health? Knowable Magazine