Here is the link to the first article. You can access the article by clicking on the link below. After reading please ... ask a question or make a comment. The ideas is to begin a discussion on something that interests you. Enjoy!
http://www.lhl.uab.edu:15091/ehost/pdf?vid=5&hid=108&sid=cea1fca7-dc82-47ec-840b-41868347b501%40sessionmgr104
