{HEAD ~ The pharmaceutical composition} 13, wherein {TAIL ~ the composition} comprises as gel forming agent a phospholipid, respectively a phospholipid mixture, which contains at least 60% by weight phosphatidylcholine 
wherein
{ HEAD ~ The pharmaceutical composition } 13 , wherein { TAIL ~ the composition } comprises as gel forming agent a phospholipid , respectively a phospholipid mixture , which contains at least 60 % by weight phosphatidylcholine
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH