Association between electronic nicotine delivery systems and electronic non-nicotine delivery systems with initiation of tobacco use in individuals aged < 20 years. A systematic review and meta-analysis

- Yoong, Sze Lin; Hall, Alix; Turon, Heidi; Stockings, Emily; Leonard, Alecia; Grady, Alice; Tzelepis, Flora; Wiggers, John; Gouda, Hebe; Fayokun, Ranti; Commar, Alison; Prasad, Vinayak M.; Wolfenden, Luke