E. Forbes

Safety and immunogenicity of an oral, inactivated, whole-cell vaccine for Shigella sonnei: preclinical studies and a Phase I trial.

A. L. Bourgeois, R. Walker, R. Mckenzie, 2006, Vaccine.

A double-blind, placebo-controlled trial to evaluate the efficacy of PTL-003, an attenuated enterotoxigenic E. coli (ETEC) vaccine strain, in protecting against challenge with virulent ETEC.

M. Finucane, R. Sack, E. Hall, 2008, Vaccine.