Phase IIb trial of in vivo electroporation mediated dual-plasmid hepatitis B virus DNA vaccine in chronic hepatitis B patients under lamivudine therapy. - Yang FQ; Rao GR; Wang GQ; Li YQ; Xie Y; Zhang ZQ; Deng CL; Mao Q; Li J; Zhao W; Wang MR; Han T; et al. (World journal of gastroenterology, 2017)