Galactosylated chitosan-g-PEI/DNA complexes-loaded poly(organophosphazene) hydrogel as a hepatocyte targeting gene delivery system. - Jiang HL; Kim YK; Lee SM; Park MR; Kim EM; Jin YM; Arote R; Jeong HJ; Song SC; Cho MH; Cho CS (Archives of pharmacal research, 2010)