Hidalgo, Maria M <br/><br/>
Serum levonorgestrel levels and endometrial thickness during extended use of the levonorgestrel-releasing intrauterine system.  [electronic resource] 

 -  Contraception  Jul 2009 
 - 84-9 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>1879-0518 
<br/><br/><label>Standard No.: </label>10.1016/j.contraception.2009.01.004  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Contraceptive Agents, Female--administration & dosage<br/>Endometrium--drug effects<br/>Estradiol--administration & dosage<br/>Female<br/>Humans<br/>Intrauterine Devices, Medicated<br/>Levonorgestrel--administration & dosage<br/>Middle Aged<br/>Time Factors