the guy that told me this was the founding doctor at
http://en.regenglobal.net/nfront/this place is probably the biggest plas surgery hospital in korea, it looks like a cross of barneys with west world.
in his office he had hundreds of pics with famous k and j pop stars, both dudes and chics. he does fat injections all day long, and they have perfected the procedure in order to maximise survival, stem cells, etc.
he told me the most important success factors are your youth, ie dont be older than 35, you should not be below 20 percent body fat so that he can get enough doner material. he said for guys it can be done, but expect to go there 3 to 4 times until it looks good, and again you must have the scafholding already.