Seasonality of birth in patients with childhood Type I diabetes in 19 European regions

Aims/hypothesis: Differences in seasonality of birth patterns between the general population and the group who develop Type I (insulin-dependent) diabetes mellitus indicate that environmental factors operating around the antenatal and perinatal period could be important. We investigated whether the same unsual patterns in seasonality of birth observed in children with Type I diabetes in Great Britain could also be found in other European populations.