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Eugene Garfield eugene.garfield at THOMSON.COM
Tue Apr 26 16:16:22 EDT 2005

A medical journal editor has made the following request:


 In the past I have written that the average number of 

co-authors per article in clinical research had reached 2 around 

1955, and had been growing exponentially for the entire century.

     I was challenged  to produce a graph.   


     I seem to remember Derek de Solla Price having published just 

such a graph   

  On the other hand, that was then, and I'd like something 

more modern. Do you have a good reference to such a figure.


If you recall such published data especially for clinical research I
will be glad to forward the information. Thanks in advance. Gene


When responding, please attach my original message
Eugene Garfield, PhD. email:  garfield at 
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