We thank the trial steering committee (including Tom Fahey, Paul Little, and Max Bachmann) and Julian Hopkin, Norman Vetter, and Robert Newcombe, who formed the data monitoring and ethics committee. We also thank the clincians who recruited children into the study: R Barrett, J Broughton, H Bugler, D Cocks, C Davies, P Davies, K Dayananda, A Disley, R Edwards, D Evans, J Foy, P Groom, K Hasan, B Herbert, K Holgate, C Hyett, D Jenkins, D Jones, J Jones, B Jones, M Kirkwood, U Kumar, H Lawton, G Lewis, S Lush, H Lydon, A Maclean, J Mahapatra, D Morgan, R Morgan, D Pathy, S Pawar, A Pierry, J Prichard, M Rees, S Rees, C Robinson, T Robinson, S Rowe, R Saxena, J Shewring, S Shrivastava, S Sinha, J Steiner, M Sullivan, L Tapper-Jones, M Thomas, O Velusami, C Walby, D Ward, E Williams, and R Williams.