scholarly journals A SAS Macro for Covariate-Constrained Randomization of General Cluster-Randomized and Unstratified Designs

2017 ◽  
Vol 77 (Code Snippet 1) ◽  
Author(s):  
Erich J. Greene
2020 ◽  
Vol 5 (2) ◽  
pp. 230-239
Author(s):  
Shaikh I. Ahmad ◽  
Bennett L. Leventhal ◽  
Brittany N. Nielsen ◽  
Stephen P. Hinshaw

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