HPV vaccine long term controlled study needed to determine safety concerns not biased statements from original data Aside Leave a comment November 15, 2015 Jeffrey A. Hirschfield, MD CPI HPV vaccine long term controlled study needed to determine safety concerns not biased statements from original data Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Like this:Like Loading...