1. Department of Chemistry, Faculty of Arts and Sciences, American University of Beirut, Beirut 1107 2020, Lebanon
2. Center for the Study of Tobacco Products, Virginia Commonwealth University, Richmond, Virginia 23220, United States
3. Department of Natural Sciences, School of Arts and Sciences, Lebanese American University, Chouran, Beirut 1102-2801, Lebanon
4. Mechanical Engineering Department, Maroun Semaan Faculty of Engineering and Architecture, American University of Beirut, Beirut 1107-2020, Lebanon