Did marilyn monroe go to rehab?

i was watching a news special about celebrity rehab and they were talking about all different celebs, lindsay, britney, nicole richie, mike tyson, etc., Then they were comparing how today's Hollywood is much more public with rehab, and how in the past, it was done very quietly, and they showed a video of, what looks like marilyn, walking in a fur coat, walking and trying to hide or something.. did she go to rehab?