%0 Journal Article %T PEG/lecithin–liquid-crystalline composite hydrogels for quasi-zero-order combined release of hydrophilic and lipophilic drugs %A Zhang, Hongbin %A Hao, Rui %A Ren, Xiangkui %A Yu, Li %A Yang, Huai %A Yu, Haifeng %J RSC Advances %V 3 %N 45 %P 22927-22930 %D 2013-10-28 %I The Royal Society of Chemistry %~ DeepDyve