Does month of birth affect risk of Crohn's disease in childhood and adolescence?
Sorensen, H. T., Pedersen, L., Nogard, B., Fonager, K., & Rothman, K. (2001). Does month of birth affect risk of Crohn's disease in childhood and adolescence? BMJ (Clinical research ed.), 323(7318), 907. DOI: 10.1136/bmj.323.7318.907