E cigarette users could be at risk from dangerous 'popcorn lung' disease, Harvard research finds The Independent The Independent PCN 250 Chitosan thin film microextraction combined with GCMS MS for the determination of diacetyl and four related diketone ketol flavorings in e cigarette liquids ScienceDirect Riyadh is cracking down on smoking in undesignated areas. Violators face fines from SAR 200 up to SAR 5,000, with penalties doubled in repeated cases. Stay safe, stay compliant! e cigarettes: Despite ban, e cigarettes widely available at tobacco shops, sold without age verification: Survey The Economic Times