i would stick to poland's dr. simka in katowice, or go to warsaw. they know a great deal, and are on top of all of the newest devices, and would advise you of their opinion.
they have done the most procedures, i believe and have all their stats so your friend can make an educated decision when he feels he's ready...if he could wait, it might be better as their equipment seems to improve dailyit seems.
PPMS. Liberated Katowice, Poland
06/05/10 angioplasty RJV-re-stenodsed
26/08/10 stent RJV
28/12/10 follow-up ultrasound intimal hyperplasia