Answers to the questions on Approaches for estimating prevalence ratios by J A Deddens and M R Petersen, on pages 501–6.BMJ Publishing Group Ltd18 June 2008
Answers to the questions on Genetic susceptibility to occupational exposures by D C Christiani, A J Mehta and C-L Yu, on pages 430–6.BMJ Publishing Group Ltd16 May 2008
Answers to the questions on Measuring change in psychosocial working conditions: methodological issues to consider when data are collected at baseline and one follow-up time point by Smith and Beaton, on pages –96.BMJ Publishing Group Ltd18 March 2008
Measuring change in psychosocial working conditions: methodological issues to consider when data are collected at baseline and one follow-up time pointP Smith, D Beaton18 March 2008
Selecting appropriate study designs to address specific research questions in occupational epidemiologyHarvey Checkoway, Neil Pearce, David Kriebel17 August 2007
Exposure and dose modelling in occupational epidemiologyDavid Kriebel, Harvey Checkoway, Neil Pearce20 June 2007