The use of e cigarettes among university students in Malaysia Miao Nan, executive director of Ruyan Group Ltd., puffs an electronic smoke while he shows other design during an interview at his office in Beijing, China, Tuesday, Feb. 17, 2009. Ruyan Group Examining the effectiveness of general practitioner and nurse promotion of electronic cigarettes versus standard care for smoking reduction and abstinence in hardcore smokers with smoking related chronic disease: protocol for a randomised controlled Opinions non smoking US teenagers using e cigarettes as smoking alternative by age group 2019 Statista