Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Gregory M. Peterson and Boo H. C. Khoo and Richard J. von Witt,Clinical Response in Epilepsy in Relation to Total and Free Serum Levels of Phenytoin,Therapeutic Drug Monitoring,0163-4356,Ovid Technologies (Wolters Kluwer Health),1991-09,13,5,415-419,https://cir.nii.ac.jp/crid/1360016865936083328,https://doi.org/10.1097/00007691-199109000-00004