Noonan, C. W., Williamson, D. M., Henry, J. P., Wagner, L., & Marrie, R. A. (2010). The Prevalence of Multiple Sclerosis in 3 US Communities: The Role of Vitamin D [Response to Letter]. Centers for Disease Control and Prevention.

Noonan, Curtis W., Dhelia M. Williamson, Judy P. Henry, Laurie Wagner, und Ruth Ann Marrie. The Prevalence of Multiple Sclerosis in 3 US Communities: The Role of Vitamin D [Response to Letter]. Centers for Disease Control and Prevention, 2010.

Noonan, Curtis W., et al. The Prevalence of Multiple Sclerosis in 3 US Communities: The Role of Vitamin D [Response to Letter]. Centers for Disease Control and Prevention, 2010.