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