st: global curve fitting

[David Airey <david.airey@Vanderbilt.Edu>]

.

In Prism 4 (graphpad.com) there is the option of fitting curves using  
global curve fitting, in which parameters are shared. This is in a  
pharmacology context, like saturation binding. I don't find anything  
searching for "global curve fitting" using Stata.

A quick description of global curve fitting in this context is:

http://www.graphpad.com/articles/P4Global.pdf

Cheers,

-Dave
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