[R] is GEE2 for continuous outcome implemented in R?

[COURVOISIER Delphine]

hi,

surprisingly, I haven't found an implementation of GEE2 in R, except in the orth package but only for binary outcome. There was a post in 2004 that asked the same question: is there any package in R can do the GEE2?

thanks in advance,

delphine