AU - Selvaraj S, Prasad V TI - Characteristics of cluster randomized trials: Are they living up to the randomized trial? PT - JOUR DP - 2013 TA - JAMA Internal Medicine pages = {313-315}, VI - 173 IP - 4 AID - 10.1001/jamainternmed.2013.1638 [doi] 4100 - http://dx.doi.org/10.1001/jamainternmed.2013.1638 SO - JAMA Internal Medicine February 25, 2013 173(4):313