{HEAD ~ The time release patch} 2, wherein said preservative is a bacteriocidal agent or {TAIL ~ bacteriostatic agent} 
{ HEAD ~ The time release patch } 2 , wherein said preservative is a bacteriocidal agent or { TAIL ~ bacteriostatic agent }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL