A. Solimano, M. Whitfield, F. Germain, and J. Tomlinson, British Columbia Children's Hospital, Vancouver; A. Peliowski, P. Etches, and B. Young, Royal Alexandra Hospital, Edmonton, Alberta; C. M. T. Robertson, Glenrose Rehabilitation Hospital, Edmonton; D. McMillan, R. Sauve, L. Bourcier, and H. Christianson, Foothills Hospital and Alberta Children's Hospital, Calgary; K. Sankaran and B. Andreychuk, Royal University Hospital, Saskatoon, Saskatchewan; M. Seshia, O. Casiro, V. Debooy, and V. Cook, Health Sciences Centre, Winnipeg, Ontario; C. M. G. Cronin, D. Moddemann, and N. Granke, St Boniface Hospital, Winnipeg; C. Nwaesei and L. St Aubin, The Salvation Army Grace Hospital, Windsor, Ontario; D. Reid, D. Lee, C. Kenyon, L. Whitty, and J. Farrell, St Joseph's Health Centre, London, Ontario; B. Schmidt, S. Saigal, P. Gillie, J. Dix, and B. Zhang, Hamilton Health Sciences Corporation, Hamilton, Ontario; A. Ohlsson, E. Asztalos, and L. Wiley, Women's College Hospital, Toronto, Ontario; A. James, The Hospital for Sick Children, Toronto; K. F. W. Young Tai and M. Clarke, Kingston General Hospital, Kingston, Ontario; M. Vincer and S. Stone, IWK Grace Health Centre, Halifax, Nova Scotia.
R. Kohan, N. French, and H. Benninger, King Edward Memorial Hospital for Women, Perth; C. Barnett, R. Haslam, and J. Ramsay, Women's and Children's Hospital, Adelaide; P. Davis, L. Doyle, B. Faber, and K. Callanan, Royal Women's Hospital, Melbourne; S. Fraser, Mercy Hospital for Women, Melbourne; K. Lui, M. Rochefort, and E. McAvoy, Westmead Hospital, Westmead; P. Colditz, and M. Pritchard, Royal Women's Hospital, Brisbane; P. Steer, D. I. Tudehope, V. Flenady, and J. Hegarty, Mater Mothers' Hospital, Brisbane.
New Zealand Centers
L. Mildenhall, W. Smith, and L. McCarthy, National Women's Hospital and Middlemore Hospital, Auckland.
Hong Kong Center
T. Fok, Prince of Wales Hospital, Shatin.
US Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network Centers
D. K. Stevenson, B. Fleisher, and B. Ball, Stanford University Medical Center, Palo Alto, California; L. A. Papile, G. Laadt, and C. Backstrom, University of New Mexico School of Medicine, Albuquerque; J. Tyson, S. Broyles, and S. Madison, The University of Texas Southwestern Medical Center, Dallas; W. A. Carlo, K. Nelson, M. Collins, and S. Johnson, The University of Alabama at Birmingham; S. Shankaran, V. Delaney-Black, G. Muran, and D. Driscoll, Children's Hospital Michigan, Detroit; B. J. Stoll, N. Simon, and E. Hale, Emory University, Atlanta, Georgia; A. A. Fanaroff, D. Wilson, M. Hack, N. Newman, Case Western Reserve University, Cleveland, Ohio; C. R. Bauer, A. M. Worth, and W. Griffin, University of Miami, Miami, Florida; W. Oh, B. R. Vohr, and A. Hensman, Brown University, Providence, Rhode Island.
Steering Committee: B. Schmidt (chair), P. Davis, D. Moddemann, A. Ohlsson, R. Roberts, S. Saigal, A. Solimano, M. Vincer, and L. Wright. External Safety Monitoring Committee: M. Gent, W. Fraser, and M. Perlman. Bayley Scales of Infant Development II Certification: R. Adkins. Audiology Central Adjudication Committee: L. Elden, C. M. T. Robertson, and B. R. Vohr. Consultant Pharmacist: S. Gray. Coordinating and Methods Center: R. Roberts and K. Thorpe (biostatisticians); N. LaPierre (trial coordinator).