?url_ver=Z39.88-2004&rft_id=PQ+ETD%3A592001&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Gerrard%2C+G.&rft.aufirst=G.&rft.aulast=Gerrard&rft.date=2007&rft.inst=University+of+London&rft.degree=Doctoral&rft.title=Modulation+of+P-glycoprotein+by+zosuquidar+trihydrochloride.&rft.tpages=257