[R] Mantel-Haenszel relative risk with Greenland-Robins variance estimate

[Frank E Harrell Jr]

Does anyone know of an R function for computing the Greenland-Robins 
variance for Mantel-Haenszel relative risks?

Thanks
Frank
-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University