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