When should rehabilitation begin after stroke?

You mean to tell me that this is still unknown? That's disgusting!  What the hell have stroke associations been doing? All of us current survivors have been guinea pigs? I feel so lacking in confidence in  my medical staff.
http://onlinelibrary.wiley.com/doi/10.1111/ijs.12020/abstract?deniedAccessCustomisedMessage=&userIsAuthenticated=false
Early rehabilitation is widely regarded as an important feature of effective stroke care. But what is ‘early’, and what kinds of therapies should, or can, we begin soon after stroke onset? In this commentary, some of the barriers and drivers for early rehabilitation research and practice are explored.