Angell, M <br/><br/>
The interpretation of epidemiologic studies.  [electronic resource] 

 -  The New England journal of medicine  Sep 1990 
 - 823-5 p.  digital 
<br/><br/> Publication Type: Comment; Editorial 
<br/><br/><label>ISSN: </label>0028-4793 
<br/><br/><label>Standard No.: </label>10.1056/NEJM199009203231209  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child<br/>Cystic Fibrosis--physiopathology<br/>Epidemiologic Methods<br/>Humans<br/>Risk Factors<br/>Tobacco Smoke Pollution--adverse effects