Randomized, Placebo-Controlled Trial of Inactivated Poliovirus Vaccine in Cuba October 2007, Vol 9, No 1
N Engl J Med 2007;356:1536-44. Copyright © 2007 Massachusetts Medical Society. All rights reserved.
N Engl J Med 2007;356:1536-44. Copyright © 2007 Massachusetts Medical Society. All rights reserved.