[R] Hierarchical models in R

[francogrex]

Is there a way to do hierarchical (bayesian) logistic regression in R, the
way we do it in BUGS? For example in BUGS we can have this model:
model
{for(i in 1:N) {
    	y[i] ~ dbin(p[i],n[i])
    	logit(p[i]) <- beta0+beta1*x1[i]+beta2*x2[i]+beta3*x3[i]
	}
	sd ~ dunif(0,10) 
	tau <- pow(sd, -2) 
     	beta0 ~ dnorm(0,0.1)
                beta1 ~ dnorm(0,tau)
	beta2 ~ dnorm(0,tau)
	beta3 ~ dnorm(0,tau)
}
where we put a prior on the parameters betas, but the sd of the priors is
determined along with the parameters in a full bayesian model. I know that
there are MCMC packages in R but I didn't see one that can do the
hierarchical stuff. Thanks

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