Safety, tolerability, and immunogenicity of two Zika virus DNA vaccine candidates in healthy adults: randomised, open-label, phase 1 clinical trials. - Gaudinski MR; Houser KV; Morabito KM; Hu Z; Yamshchikov G; Rothwell RS; Berkowitz N; Mendoza F; Saunders JG; Novik L; Hendel CS; Holman LA; et al. (Lancet (London, England), 2018)