A cardiac pacemaker, {TAIL ~ defibrillator}, or other programmable medical device includes {HEAD ~ a source unit} and a collection unit  
A cardiac pacemaker , { TAIL ~ defibrillator } , or other programmable medical device includes { HEAD ~ a source unit } and a collection unit
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH