First, Dr Gat did not provide any answer such as "not enough time for a study." Second, I asked for informal information Third if six months was time enough to get results then I would think 4 years...
It's been 4 years since the doctors' research. I have exchanged 3 emails with Dr. Gat. Each time I asked him point blank if he has any follow up on the patients he had seen; not necessarily formal...