10 Ways iPad can help doctors improve patient care: http://www.kevinmd.com/blog/2010/02/10-ways-apple-ipad-doctors-improve-patient-care.html
The Web Print option in SharkPrint will allow you to print files in these formats:
If you are not using a Microsoft Office program such as Word, you will need to "save as" one of the file formats listed.
Download the free chapter:
Some Tools listed include both FREE and FOR PURCHASE apps. Many are cross platform (Apple, Android, Blackberry etc)