{TAIL ~ The method} 5, wherein the pores have an average diameter of {HEAD ~ less than 5 microns} 
{ TAIL ~ The method } 5 , wherein the pores have an average diameter of { HEAD ~ less than 5 microns }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD