We are grateful to all past and current members of the Handbook Advisory Group for discussions and feedback, and would particularly like to thank Doug Altman, Chris Cates, Mike Clarke, Jon Deeks, Donna Gillies, Andrew Herxheimer, Harriet MacLehose, Philippa Middleton, Ruth Mitchell, David Moher, Donald Patrick, Ian Shemilt, Lesley Stewart, Jessica Thomas, Jane Tierney and Danielle Wheeler.
Many contributed constructive and timely peer review. We thank Phil Alderson, Claire Allen, Judith Anzures, Chris Cates, Jonathan Craig, Miranda Cumpston, Chris Del Mar, Kay Dickersin, Christian Gluud, Peter G°tzsche, Frans Helmerhorst, Jini Hetherington, Sophie Hill, Sally Hopewell, Steve McDonald, David Moher, Ann M°ller, Duncan Mortimer, Karen New, Denise OĺConnor, Jordi Pardo, Rob Scholten, Simon Thompson, Jan Vandenbroucke, Janet Wale, Phil Wiffen, Hywel Williams, Paula Williamson, Jim Wright and Diana Wyatt.
Specific administrative support for this version of the Handbook was provided by Jane Lane. In addition, skilled and generous administrative and technical support provided by Claire Allen, Dave Booker, Jini Hetherington, Monica Kjeldstr°m, Cindy Manukonga, Rasmus Moustgaard, Jane Predl and Jacob Riis has contributed greatly to the preparation and co-ordination of this Handbook. We would also like to thank Lucy Sayer, Fiona Woods and Laura Mellor at Wiley-Blackwell for their patience, support and advice.
This major revision of the Handbook would not have been possible without the generous support provided to the editors by colleagues at the MRC Biostatistics Unit and the Institute of Public Health in Cambridge, UK and at the Australasian Cochrane Centre, Monash University, Australia.