著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) ROBERTSON D.,Release rates of levonorgestrel from Silastic^<(encircled R)> capsules homogeneous rods and covered rods in humans.,Contraception,,,1983,27,5,483-495,https://cir.nii.ac.jp/crid/1570572701228588800,https://doi.org/10.1016/0010-7824(83)90045-8