Wongwiwatthananukit S, Benjanakaskul P, Songsak T, Suwanamajo S, Verachai V. Efficacy of Vernonia cinerea for Smoking Cessation. J Health Res [Internet]. 2018 Nov. 20 [cited 2024 May 10];23(1):31-6. Available from: https://he01.tci-thaijo.org/index.php/jhealthres/article/view/156327