(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
[View Larger Version of this Image (147K JPEG file)]

Seasonal variation in month of birth in people with Crohn's disease in Denmark (results obtained from periodic regression in a 12 month period; dotted lines represent 95% confidence limits)

Access jobs at BMJ Careers
Whats new online at Student BMJ