Fritz, Marc A. <br/><br/>
Clinical gynecologic endocrinology and infertility / 
Marc A. Fritz, Leon Speroff. 
 - 8th ed. 
 - Philadelphia :  Wolters Kluwer Health/Lippincott Williams & Wilkins,  c2011. 
 - x, 1439 p. :  ill. (some col.) ;  29 cm.