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