A randomised, double-blind, controlled trial of the immunogenicity and tolerability of a meningococcal group C conjugate vaccine in young British infants. by English, M, MacLennan, J, Bowen-Morris, J, Deeks, J, Boardman, M, Brown, K, Smith, S, Buttery, J, Clarke, J, Quataert, S, Lockhart, S, Moxon, E