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