oh, I want it for personal use!
From their site's copyright notice, they seem to draw a distinction between documents
which they do
allow to be copied for personal use, and everything else they have up on their site which may not be copied without their express permission. See below:
Permission to use documents such as white papers, press releases, data sheets, etc. from this Web site is granted, provided that (i) the copyright notice below and this permission notice appear on each use of such documents; (ii) such use is for informational and non-commercial or personal purposes only; and (iii) documents are not copied or posted on any network computer or broadcast in any media. No modifications of any Information is permitted. Use for any other purpose is expressly prohibited by law. Documents specified above do not include the design or layout of the www.quintiles.com Web site or any other Quintiles owned, operated, licensed or controlled site. Elements of Quintiles Web sites are protected by trade dress and other laws and may not be copied or imitated in whole or in part. No logo, graphic, sound or image from any Quintiles Web site may be copied or retransmitted unless expressly permitted by Quintiles.
Also, the fact they don't have an obvious way to download the presentations your link points to seems to be a pretty strong indication they don't want people downloading them. Or so it seems to me.