@book{182506, author = {Speroff, Leon and Fritz, Marc A.}, title = {Clinical gynecologic endocrinology and infertility}, publisher = {Wolters Kluwer Health}, year = {2011}, address = {Philadelphia (Estados Unidos)}, edition = {8th ed}, url = {http://ez.urosario.edu.co/login?url=http://crai-recursos.urosario.edu.co/valida/index2.php?correo=^u&url=http://solution.lww.com/book/isbn/9780781779685?isbnActivated=9780781779685tab_198589&cadena=Q2xpbmljYWwgZ3luZWNvbG9neXx3ZWJpYmxpb3RlY2FAdXJvc2FyaW8uZWR1LmNvfFVSb3NhcmlvQ3JAaTIwMTg=} }