TY  - JOUR 
T1  - Stir bar-sorptive extraction, solid phase extraction and liquid-liquid extraction for levetiracetam determination in human plasma: comparing recovery rates
JO  - Brazilian Journal of Pharmaceutical Sciences
A1  - Freitas-Lima, Priscila
A1  - Ferreira, Flavia Isaura Santi
A1  - Bertucci, Carlo
A1  - Alexandre Júnior, Veriano
A1  - Dreossi, Sônia Aparecida Carvalho
A1  - Pereira, Leonardo Regis Leira
A1  - Sakamoto, Américo Ceiki
A1  - Queiroz, Regina Helena Costa
SN  - 1984-8250
UL  - 10.1590/S1984-82502015000200017
VL  - 51 
Y1  - 2015
PB  - Brasil 
ER  -