author = { Grunert, Jens AND de Geyter, Christian AND Nieschlag, Eberhard },

title = { Letters to the Editor },

publisher = {Oxford University Press (OUP)},

isbn = {1460-2350},

isbn = {0268-1161},

keywords = { Obstetrics and Gynecology , Rehabilitation , Reproductive Medicine },

year = {1991},

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