Baumgartner, Ludwig N <br/><br/>
Correspondence (letter to the editor): Alternatives.  [electronic resource] 

 -  Deutsches Arzteblatt international  Nov 2011 
 - 768-9; author reply 769-70 p.  digital 
<br/><br/> Publication Type: Letter; Comment 
<br/><br/><label>ISSN: </label>1866-0452 
<br/><br/><label>Standard No.: </label>10.3238/arztebl.2011.0768c  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Contraceptives, Oral, Combined--administration & dosage<br/>Contraceptives, Oral, Hormonal--administration & dosage<br/>Female<br/>Humans<br/>Pregnancy