{TAIL ~ The present invention} relates to methods and apparatus for performing a non continuous circumferential treatment of {HEAD ~ a body lumen} 
{ TAIL ~ The present invention } relates to methods and apparatus for performing a non continuous circumferential treatment of { HEAD ~ a body lumen }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD