L. Macy (Accessed July 18, 2009), (subscription access)
Available at http://www.pophealthmetrics.com/content/4/1/11 (Accessed July, 19, 2007).
L. Macy (Accessed July 28, 2008), (subscription access)
L. Macy (Accessed July 12, 2006), (subscription access)
L. Macy (Accessed July 31, 2007), (subscription access)
L. Macy (Accessed July 17, 2005), (subscription access)