Howard, T. D., Koppelman, G. H., Xu, J., Zheng, S. L., Postma, D. S., Meyers, D. A., & Bleecker, E. R. (2002). Gene-Gene Interaction in Asthma: IL4RA and IL13 in a Dutch Population with Asthma. The American Society of Human Genetics.

Howard, Timothy D., Gerard H. Koppelman, Jianfeng Xu, Siqun L. Zheng, Dirkje S. Postma, Deborah A. Meyers, och Eugene R. Bleecker. Gene-Gene Interaction in Asthma: IL4RA and IL13 in a Dutch Population With Asthma. The American Society of Human Genetics, 2002.

Howard, Timothy D., et al. Gene-Gene Interaction in Asthma: IL4RA and IL13 in a Dutch Population With Asthma. The American Society of Human Genetics, 2002.