Pitrou, Isabelle <br/><br/>
Mobile phone follow-up of subjects included in a prospective cohort study: unexpected difficulties.  [electronic resource] 

 -  European journal of epidemiology  2007 
 - 411-2 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>0393-2990 
<br/><br/><label>Standard No.: </label>10.1007/s10654-007-9130-5  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cell Phone<br/>Data Collection--methods<br/>Humans<br/>Prospective Studies<br/>Telephone