TY  - JOUR 
T1  - Plasma free and total carnitine measured in children by tandem mass spectrometry
JO  - Brazilian Journal of Medical and Biological Research
A1  - Osorio, J.H.
A1  - Pourfarzam, M.
SN  - 0100-879X
UL  - 10.1590/S0100-879X2002001100003
VL  - 35 
Y1  - 2002
PB  - Brasil 
ER  -