Author(s):  
Nathan D. Zasler ◽  
Paul E. Kaplan
Keyword(s):  

1947 ◽  
Vol 1 (3) ◽  
pp. 214-222
Author(s):  
Harry Lipson ◽  
E. W. Crawfis ◽  
Edward W. Shannon ◽  
Louis J. Karnosh
Keyword(s):  

JAMA ◽  
1965 ◽  
Vol 193 (4) ◽  
pp. 322
Author(s):  
Walter Freeman
Keyword(s):  

1957 ◽  
Vol 31 (1-4) ◽  
pp. 93-95
Author(s):  
Aldo Morello ◽  
Adolph Bartecek

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