Pinpin, Angelbert, Rad Rien Quizon, Keanno Stevinz Rabe, and Marie Antoinette Rosete. 2022. “Analysis on NYTS 2021: Socio-Demographic Factors and Its Effect on Harm Perception of Cigarette and E-Cigarette Smoking”. UJoST- Universal Journal of Science and Technology 1 (2):305-30. http://ujost.org/index.php/journal/article/view/88.