author = { Fletcher, Robert H. AND Fletcher, Suzanne W. },

title = { Clinical research : Boundaries and standards Boundaries and standards },

publisher = {Springer Science and Business Media LLC},

isbn = {0884-8734},

isbn = {1525-1497},

keywords = { Internal Medicine },

year = {1986},

url = { http://slubdd.de/katalog?TN_libero_mab2 }