Andersen, Bjorn. <br/><br/>
Methodological errors in medical research :  an incomplete catalogue / 
by Bjorn Andresen. 
 - Oxford :  Blackwell Scientific Publications,  1990. 
 - 270 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0632021373 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medicine.<br/>Research.