Since a Lie superalgebra can be associa ted with a Z2-graded group, properties of Z2-groups are discussed and Z2-graded structures of some special class es of groups are determined.

The other group served as a control, and their questions were carefully graded by the experimenter.

Recommendations were graded using methods adapted from the us Preventive Services Task Force and the Grading of Recommendations, Assessment, Development, and Evaluation Working Group.