Randomization. We randomly assigned participants to. groups using a permuted block design with. varying block size. Sequence numbers and. group allocation were concealed in sealed,. opaque, numbered envelopes prepared cen- trally and provided sequent
McGraw-Hill Companies, Inc.; 2005.p.1510-1. 6. Homer RJ ... Maslow AD, Regan MM, Israel E, Darvish A, Mehrez M, .... The authors would like to express their gratitude to A. Benedito da Silva and S. Cezar da Silva Junior for their techni-.