%0 Book %0 [E-Book] / %A Penson, David F. %E Penson, David F. %E Wei, John T. %I Humana Press Inc %D 2007 %C Totowa, NJ %@ 9781597452304 %T Clinical Research Methods for Surgeons [E-Book] %U http://dx.doi.org/10.1007/978-1-59745-230-4