1 TIM J. PETERS is a Professor of Primary Care Health Services Research and Head of the School of Clinical Sciences, University of Bristol. A statistician with interests ranging from paediatric and perinatal epidemiology to community-based RCTs, he has worked with Jean Golding since 1980 when she introduced him to the 1958 cohort study during his Oxford MSc, through his PhD studies on the 1958 and 1970 cohorts, co-editing Paediatric and Perinatal Epidemiology and many studies in between.