Rejoinder to "The Essential Role of Pair Matching in Cluster-Randomized
Experiments, with Application to the Mexican Universal Health Insurance
Evaluation" [arXiv:0910.3752]Comment: Published in at http://dx.doi.org/10.1214/09-STS274REJ the
Statistical Science (http://www.imstat.org/sts/) by the Institute of
Mathematical Statistics (http://www.imstat.org