Universidad de Aconcagua – Sistema de Bibliotecas:
<br/>
<br/>The Merck manual of diagnosis and therapy / 
editors: Mark H. Beers and Robert Berkow 
 - 17th ed., centennial ed. 
 - Whitehouse Station :  Merck Research Laboratories,  1999 
 - XXXIII, 2833 p.;  20 cm