This invention pertains to {HEAD ~ delivery devices} made of an erodible polymer with a surfactant in the device for modifying {TAIL ~ the rate} of erosion 
This invention pertains to { HEAD ~ delivery devices } made of an erodible polymer with a surfactant in the device for modifying { TAIL ~ the rate } of erosion
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH