TY - RPRT TI - Pulsatile drug release control using hydrogels. AU - Akihiko Kikuchi AU - Teruo Okano PY - 2002 DO - 10.1016/s0169-409x(01)00243-5 UR - https://pubmed.ncbi.nlm.nih.gov/11755706/ ID - 11755706 ER -