{HEAD ~ Methods} and apparatus are provided for {TAIL ~ non continuous circumferential treatment} of a body lumen 
are provided for
{ HEAD ~ Methods } and apparatus are provided for { TAIL ~ non continuous circumferential treatment } of a body lumen
HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH