Effect of a quadrivalent meningococcal ACWY glycoconjugate or a serogroup B meningococcal vaccine on meningococcal carriage: an observer-blind, phase 3 randomised clinical trial. - Read, Robert C.; Baxter, David; Chadwick, David R.; Faust, Saul N.; Finn, Adam; Gordon, Stephen B.; Heath, Paul T.; Lewis, David J. M.; Pollard, Andrew J.; Turner, David P. J.; Bazaz, Rohit; Ganguli, Amitava; et al. (Lancet, 2014)