Ayala, Carlos. <br/><br/>
Boards and wards :  a review for USMLE steps 2 & 3 / 
Carlos Ayala, Brad Spellberg. 
 - 2nd  ed. 
 - Oxford :  Blackwell,  2003. 
 - xvii, 363  p. 
<br/><br/><label>ISBN: </label>1405103418 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Medicine--Examination, questions, etc.