@book{9470, author = {Steinbacher, Derek M. and Sierakowski, Steven R.}, title = {First aid for the NBDE part 1 }, publisher = {McGraw-Hill Medical,}, year = {2007.}, address = {New York ;}, note = {Includes index.}, url = {http://www.loc.gov/catdir/enhancements/fy0713/2007296061-t.html} }