Clinical evidence.

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Item Link Original Source
Limited (search only)   no.3 2000 University of Michigan
Limited (search only)   no.5 2001 University of Michigan
Limited (search only)   no.7 2002 University of Michigan
Limited (search only)   no.8 2003 University of Michigan
Limited (search only)   no.9 2003 University of Michigan
Limited (search only)   no.02 yr.1999 University of California
Limited (search only)   no.10 2003 University of Michigan
Limited (search only)   no.11 2003 University of Michigan
Limited (search only)   no.13 2005 University of Michigan
Limited (search only)   no.14 2005 University of Michigan
Limited (search only)   no.14 2005 University of Michigan
Limited (search only)   no.15 2006 University of Michigan