Bruhn, John G.,  1934- <br/><br/>
The group effect :  social cohesion and health outcomes / 
John Bruhn. 
 - Dordrecht ;  New York :  Springer,  c2009. 
 - xvii, 171 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p.159-161) and index. 
<br/><br/><label>ISBN: </label>9781441903631 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social groups--Health aspects.<br/>Social medicine.<br/>Social networks--Health aspects.