author = { Russo, Mark W. AND Gaynes, Bradley N. AND Drossman, Douglas A. },

title = { A National Survey of Practice Patterns of Gastroenterologists With Comparison to the Past Two Decades },

publisher = {Ovid Technologies (Wolters Kluwer Health)},

isbn = {0192-0790},

keywords = { Gastroenterology },

year = {1999},

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