Possible to populate two levels?

Say I have collections/documents like below:

question collection:

{
   _id: ObjectId("0000"),
   title: "test question",
   survey: ObjectId("1234") //abbreviated for question assume this is a legit object id
}

---

survey collection:

{
   _id: ObjectId("1234"),
   title: "survey title!",
   user: ObjectId("5678")
}

---

user collection:

{
   _id: ObjectId("5678"),
   Name: "Abe"
}

Is there a way for me to call something like:

questions.findOne({_id: "0000"}).populate("survey.user")

to get the user information along with the question? I understand that I can populate immediate parents of question, but I'm curious if it can be done for grandparents.