Posted on March 7, 2018March 12, 2018Competing Effects Of Indirect Protection And Clustering On The Power Of Cluster-Randomized Controlled Vaccine Trials. Am J Epidemiol. Hitchings MDT, Lipsitch M, Wang R, Bellan SE. Am J Epidemiol. 2018 Mar 7. doi: 10.1093/aje/kwy047. [Epub ahead of print] Read on PubMed Share this:FacebookTwitterLinkedInReddit