How to find marginal model for quantile regression?

[maximalc]

I have clustered data for which I'd like to derive a marginal model for a specific quantile.  I know how to perform quantile regression in SAS, and I've seen how GLIMMIX can be used to derive a marginal model for the dependent mean.  I have thus far been unable to find a method for deriving a marginal model at a specific quantile.  Is there currently such a procedure in SAS, or perhaps alternatives that someone could recommend?

Thank you.

[PeterClemmensen]

I think you should check out the QUANTREG Procedure. It is used in this article on the Do Loop Blog

Quantile Regression