Malaysia Smoking Adolescent Adults COVID-19 Child Cigarette Dengue Fever Development Dynamics Electronic Erythema Multiforme Facebook Page Girardinia heterophylla Incidence Influences Initiation Instrument Internet Malaysian Model ORTHOGNATHIC SURGICAL Online Social Network Organic Traffic Page Insights Paid Promo-tion Parental Peer Perception Prevalence Rowell Syndrome SIR Model SLE TAX-LAW Time-Varying Tracking Transmission Undifferentiated Use adolescents all-cause mortalities antibacterial activity antifungal activity cardiovascular disease internet addiction leaves and stem extracts smoking-related mortality