the serum concentrations of 28 patients with epilepsy ( group pt + vpa ) who were treated with pt and concurrently with vpa and 15 patients ( group pt ) who were treated with pt but without vpa comedication were determined at 8.00 , 11.00 , 14.00 , 17.00 , and in part at 20.00 h .
C0014544
epilepsy
C0031507
pt