See my work at:

http://www.carnegiemnh.org/mollusks/staff/research.htm

http://www.usg.edu/pubs/sys_supp/2005/nov_dec05.pdf#search=%22emily%20ullo%

http://www.hi.mcg.edu/hospital/pcs/instructions.htm

http://www.seifmedgraphics.com/pages/aboutmain.html