Note for Mac Users: Use a browser other than Internet Explorer
To view the studies on this site, you will need Acrobat Reader which will read .pdf files on your computer. If you click links and cannot get the pdf files to come up, click the Acrobat Reader link to the right,which will take you to the Adobe site where you can download Acrobat Reader. You will be asked to choose your Operating System (Windows or Mac) and then it should be easy.
ACROBAT READER is FREE