"Biventricular bests RV pacing in patients with AV block: BLOCK HF published"
Heart April 25
http://www.theheart.org/article/1532879.do
"Failure Of Latest HIV Vaccine Test: A 'Huge Disappointment'"
NPR April 26
http://www.npr.org/blogs/health/2013/04/26/179231916/failure-of-latest-hiv-vaccine-test-a-huge-disappointment